All comedies have there own conventions and cliches to follow by for example adam sandler in happy gilmore,water boy and just go with it where he has a long adventure meets a girl has to try and win her heart in the end he does and obviously they live happily ever after. See in will ferrels films he starts them with him not liking someone or a distraction ends up liking this person but just like the romance films you have an argument or something that distarcts the character from there aim but in the end they are reunited an excellent example of this is step brothers.