I haven't hear the son, but I presume these are the lyrics:
You're gonna meet some strangers
Welcome to the zoo
Bitter disappointments
Except for one or two
Some of them are angry
Some of them are mean
Most of them are twisted
Few of them are clean
Now when you go dancing with young men down at the disco
Just keep it simple
You don't have to kiss though
Don't waste time with the idiots that think that they're heroes
They will betray you
Stick with us weirdos
For all your days and nights
I'm gonna be there
I'm gonna be there yes I will
Go gentle through your life
If you want me I'll be there
When you need me I'll be there for you
Don't try to make them love you
Don't answer every call
Baby be a giant
Let the world be small
Some of them are deadly
Some don't let it show
If they try and hurt you
Just let your daddy know
Now when you go giving your heart make sure they deserve it
If they haven't earned it
Keep searching it's worth it
For all your days and nights
I'm gonna be there
I'm gonna be there yes I will
Go gentle through your life
If you want me I'll be there
When you need me I'll be there for you
Go gentle to the light
I'm gonna be there
I'm gonna be there yes I will
If all your days are nights
When you want me I'll be there
Say my name and I'll be there for you
It's a bit simplistic, I'm not keen on the 'let your daddy know' line. Nor the implication that relationships are the only goal in life. But overall it doesn't sound that different from the 'I would walk through fire for you' sentiment many parents express about their young children. And actually a lot of the statements are about her learning to stand on her own two feet in relationships and not put up with shit. Ok, again a bit of a simplistic message, but I get the impression he was probably quite a shit to women in the past so I get that's top of his list of advice.
That said, I have real problems with the "I'll kill any boy who goes near my daughter" school of fatherhood. Often typified by Bruce Willis- in interviews, in Die Hard (or one of those), in his Friends appearance. Chasity balls in the US literally make me feel queasy.
I also agree strongly with what has been said above about the risk of it effectively becoming victim blaming. That if you didn't take the advice about how to behave, it's your own fault when you end up in an abusive relationship.