Souff-laid
To be 'souff-laid' is to have sex with an hot girl who is either a virgin but acts like they aren't, or a girl who is very picky about the guys in her sex life. The reference to soufflé means they're tight and hard on the outside but soft and open when you get inside.
Dude: Mate, last night I got souff-laid by that girl with the sexy glasses and amazing body who always hangs in the library! It was unreal!
Other dude: You lucky bastard!
Other dude: You lucky bastard!