A dirty sanchez:
(1) what everyone else said apart from that noob who was jizzing in someones mouth.
(2) a truly awsome (or disgusting) show on MTV alot like jackass but so much better as the welsh acent makes it even funnier and they are so much more crazy they should have been commited.
(1). me: "dude i should my finger in this girls ass when i was pounding her doggy style lastnight an then wiped it on her lip."
Rob: "oh dude u gave her a dirty sanchez? thats wrong mate"
(2) "you live on the bus you get fucked up on the bus."
"this isn't fucking gay school ya know!!"