In some ways, Trifle, it's very common. I'm not sure how much time dad spends with your children, so I'm assuming alot here, but what we call 'entertainer' fathering is a response many men use to get a quick route into their children's affections, and is often a mechanism for countering a lack of time with the children.
When you spend alot of time with kids, you do take on alot more responsibillity for diet, health, discipline etc, and in many ways your relationship with them is more serious and often not fun at all. You are able to do this because the strength of your relationship is there - there is very little insecurity in your attachment and so you can be harsh without threatening the relationships.
For people with very little time with their children (a common situation for dads), a very quick route to children's affections is to be massively fun to be with - providing all kids of treats etc etc. It was something that emerged within fathering in the 1920s, when (particularly in America), the idea of the 'playmate' dad was born - dad would be there for the 'light stuff' - fun and games etc). So this idea has wormed its way into our cultural understandings of a fathers role, and many dads think that part of what it means to be a dad is to be fun etc... Personally I think it's a response to lack of time - a compensation to accelarate the relationship.
I tend to think it's a response to an insecure relationship - it's largely subcounscious - and its what parents do when they are very anxious about their children's affections. (This is not to say we ALL play and are fun with children - of course we do, but for most of us who do alot of the parenting, this is a smaller percentage of the relationship than for those with much less time with the kids).
The big problem for 'entertainer' dads is when the kids hit the teenage years. This is for a number of reasons...
-
Many kids become bigger than their mums and mothers (or primary carers), who have done most of the discipline, start wanting more backup and support on the discipline front (this is the route of the 'wait till your father comes home' thing.... From the kids point of view, dad (who is all about fun) suddenly starts getting involved in all this boundaries and punishment business much more - and the kids resent it because the relationship is not like that to them...
-
Teenagers need serious support on serious issues - life is very tough for them, and they need a parent (when they want, of course), who they can share really difficult intimate stuff with. The parent who has based their relationship on being fun and giving treats etc does not tend to have the kind of relationship that has the depth necessary to deal with this stuff, and many dads find their relationships with their kids breaking down in the teenage stage, for this reason.
So....
I would be careful of being jealous - look closer at what is happening here - and in some ways, there are reasons to sympathise with dad. He has less opportunity to develop his relationship with his boys, and in what time he does have, he is trying a more direct route. Of course, when he's around, he's more popular, because he is the one providing the lifts, the treats etc etc...
Some communication and compromise is needed....
I'd suggest...
-
You pick on 2 or 3 rules that you'd really like him to back up - as a baseline. Sit down with him and explain why those rules are so important to you, and DON'T ask him to comply with any others - just those 2 or 3. Make it easy - us blokes like that...
-
Realise yourself what is happening is a response to his lack of time - he's trying to win his boys affection, and he's got less opportunity to do it than you. You need to respect that and let him 'win' his children's affections - you've got all week, he's only got the weekend. If you support your kids relationship with him, they will be the winners.
-
(And this is the difficult bit) - In the end, if his relationship with them is dominated by this fun/treats style, he will lose out with his kids, as they won't have enough of a real relationship with him. To avoid this, you have to draw him into the responsibility for the kids and the decisions you make - and explaining them to the kids etc - so that his relationship with them can have more 'serious' content. For example - if they need jabs - get him to explain why and take a morning off work to take them - that kind of thing. It will make his relationship with them more real and help them all in the long term..
Woops - sorry about the dissertation!
Hope that's (at least partly) relevant