I enjoy language and playing with language. Here are some of my favorite phrases.

biffed it
messed up real bad.
Big <x>
the shadowy global organization behind <x> e.g. "Big Turnip" would be the secret organization conspiring to make you buy/eat turnips
chillin'
always-correct response to "how are you doing," even if you are clearly not actually chillin'.
nyap
when pronounced correctly, it sounds like both "yes" and "no."
that's how they get you
that's how Big Whatever gets you.
that's pretty good
that is either pretty good, or alternatively not at all good, depending on context.
y'all'll
you all will (e.g. y'all'll all like this)