That's a Sandler Movie
As a teenager Donny (Adam Sandler) started to get it on with his teacher resulting in her doing time and Donny ending up a teenage father, raising his son Todd (Andy Samberg) as a single parent and becoming a bit of a celebrity doing it. But when Todd turned 18 father and son went their separate ways until many years later when with money problems Donny decides to re-enter his son's life just before Todd is due to get married much to Todd's annoyance who thinks Donny is not only embarrassing but also a bad dad.
I reckon Adam Sandler has been watching a little too much Jeremy Kyle because from a teenager getting his teacher pregnant, being a single teenage father to Todd growing up not only screwed up but ashamed of his father they are all things you would regularly see on Kyle's talk show. In fact party of the story in "That's My Boy" features a talk show host willing to pay Donny to televise him and Todd visiting prison to see Todd's mother, a dysfunctional family reunion. The sad thing is that none of this really makes up a story but is just there as a vehicle for a lot of jokes which lets it down even when you take in to account that this is an Adam Sandler movie.
So what about the comedy? Well what you get is what you expect from Adam Sandler with him acting obnoxious whilst speaking in a silly voice as in Billy Madison. The trouble is that Sandler being obnoxious, making dick jokes and acting immature is no longer amusing and quickly grows tiring. Then there is Andy Samberg and whilst Samberg doesn't play an obnoxious character here the monotony of him being whiny makes him just as annoying as Sandler. Throw in a lot of familiar faces, many of which who often show up in Sandler's comedies and it is all too typical.
I wish there was something I could say about "That's My Boy" to make you want to watch it but there isn't. Yet at the same time it isn't a terrible movie just one which is so typically Adam Sandler that you are likely to be annoyed by it being so stereotypical. What I will say is that there is a lot of humour which is going to fly over people's heads because it requires to much knowledge of old TV shows or who some of the actors are in bit parts.
What this all boils down to is that "That's My Boy" is just another Adam Sandler comedy which trades on obnoxious and extreme humour which isn't going to be to everyone's taste especially when Sandler acting obnoxious is obnoxious in itself.