4. Sam's Parents (Transformers)
I'll be the first to admit that Sam Witwicky's (Shia LaBeouf) parents are one of the most annoying things about the Transformers franchise; seeing them get high on cannabis and clown around embarrassing themselves just isn't funny or necessary - all it does is drag out films that are already far too long as it is. However, in the original Transformers film, they did manage to genuinely crack me up, largely because by this point they hadn't been horrendously overused. In the first film, they go into Sam's room and find him sweaty and agitated, with the mother promptly assuming that she had walked in on him...pleasuring himself. The situation soon enough becomes hilariously awkward for Sam and his father, until Sam reveals Mikaela (Megan Fox) hidden in his room, which soon enough gets embarrassing once again, as Sam's dad gives him a fist-bump of approval upon laying his eyes on Mikaela.