a guy thing may not be a classic and but it sure be a good and funny comedy . the plot focus on paul ( jason lee ) and who wake up the morning after his bachelor party with no memory and becky ( julia stile ) lie naked in his bed . before he can figure out what happen and he rush becky out of his apartment because his fiance karen ( selma blair ) be come . after that and a you could imagine and chaos ensues . almost every single scene in a guy thing delivers loud laugh . the funny moment come from when paul imagine what could happen if he tell karen . selma blair be a truly talented comedian and and the bad thing about this film be that she go underused . although and she turn out to be more funny than stile character and who actually isn not that interest . of course and not every comedy be perfect . a i say and a guy thing be no classic and but it not bad either and positive .