The title refers to one of the more eye-widening sequences, in which Jim (Jason Biggs) gets a bit too friendly with his mom's apple pie - if you thought Dumb and Dumber or There's Something about Mary plumbed the depths of grossness, hold on to your lunch, you ain't seen nothing yet. This laughter-packed comedy about four teenage boys who pledge to lose their virginity before prom night has enough crass gags to satisfy the most demanding fans of Porky's-style farces. Yet it also boasts some spot-on performances from a hip young cast that includes Chris Klein, Mena Suvari, Tara Reid and Natasha Lyonne. This is definitely not one to show granny, but must-see fare for those not easily offended.

At a high-school party, four friends find that losing their collective virginity isn't as easy as they had thought. But they still believe that they need to do so before college. To motivate themselves, they enter a pact to all "score" by their senior prom.