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!