Women's lifestyle magazines that try to make the reader feel inadequate that she too isn't earning £250k, married to a hedge fund manager, has breast fed all 4 children until the age of three with a thriving cup-cake business raising money for African orphans.
Incessant children bragging - all parents think their children are wonderful. The school report is dull to read, the teacher can't spell. One or two photos are fine but fifty in more or less the same pose? Find a hobby.
Don't be surprised to discover that if you try and change your child's nappy a few inches from my feet in the middle of the sitting room floor, I will turn my head and resist the urge to Mr Creosote the whole lot of you. I don't want to see any genitalia when I'm eating a scone. It's great that you've reproduced, applause, I'm really pleased for you and it's good to see that everything is anatomically in the right semblance. Now put it away, before I boak.
I agree that bragging is one of the worst characteristics and those who do it, generally have the least to boast about.
A family we know, has a father who is thrilled to be seeking benefits and is always reminding us of all the stuff he can buy and all the free time he has on the golf course. He doesn't see why he should even try seeking work and yet always says "I'd do anyfink for my son.", "These men that never see their kids, couldn't do it, mate." Dignity and pride in having a job, any job, doesn't appeal to him because in his mind, he has the graftless lifestyle of one of his premiership footballer icons. Women that have children by more than one father, are in his words "filth" - he doesn't see the irony of his own situation. His wife (also, although more understandably, without a job), does all the 'women's work' while he lazes about watching porn, gambling online and going to the corner shop to "top her up with chocolate". Other than errand jobs, he hasn't worked since leaving school. The school isn't to blame as other men have left to achieve successful careers in the money markets/law/charity/media/medicine etc. He would rather apply for as many benefits as can and accept 3 bedroom accomodation in a leafy area (the council repays the landlord) than work to pay for it. His choice, his life. The child doesn't yet want for any material items: a tv in his bedroom, laptop computer, mobile phone, gold bracelets(!)and the poor boy doesn't yet know that his life as a premiership footballer has been mapped out for him. "Go on son, keep heading that ball." I'm willing him to pursue interior design. 
The sense of entitlement without trying or giving anything back is sickening and not so much makes my blood boil but makes me feel sad that his outlook is so narrow. They now have another child on the way and when that one one nears school age, another will no doubt be produced to excuse the free time that could be filled by working.
For all the boasting about material possessions and going on cruises 
, their Christmas present to us cost a quarter of what we gave them. If their characters were different, I wouldn't give a hoot but bragging without equal present reciprocation is just gormless.