The Father Of The Bride

Imagine you have a young, innocent and beloved daughter and one day her boyfriend appears at home to have dinner with your family (you even didn't know your sweetheart had a boyfriend!)
Besides, it seems this young man hasn't the manners or the attitude you expected:

Part 1: http://www.youtube.com/watch?v=0z8phQvdCn0
Part 2: http://www.youtube.com/watch?v=Ab2xuNXst9s

It's long, but it's worth (the end it's hilarious)