[TOMT] Old 2000s movie that’s like Road trip

I remember three scenes from this movie i remember watching it when i was in elementary school and have had no luck finding it I’m pretty sure the main cast is three chicks and two dudes. First scene I remember is a dude steps in poop and the driver of the car makes him leave his shoes behind because he stepped in poop. 2nd scene I remember is this scene where one of the characters learns how to use a wet towel as a weapon rly good because he was bullied as a kid a lot and we get a flash back scene of him training with the wet towel. And then the last scene I remember is the kid who got rly good at using a wet towel as a weapon has a threesome with two of the girls.