I am a foreigner.
english expressions I like (in no particular order):
dude
you kick ass
whatever
guess what
'oh' - stop - 'my' -stop - 'god'
grand (with an irish accent)
this place is full of chavs! (with a british accent)
bugger off
who's your baby's daddy? (with a trinidadian accent)
wicked
yay!
no way
cheer up, emo kid
bad-ass
she's such a fag-hag