airhead: stupid person.
"Believe it or not, Dave can sometimes act like an airhead!"
amigo: friend (from Spanish).
"I met many amigos at Dave's ESL Cafe."
ammunition: toilet paper.
"Help! We're completely out of ammunition!"
"I'm going to need a lot of antifreeze tonight!"
armpit: dirty, unappealing place.
"This cheap motel is an absolute armpit!"
ass [offensive] (1): backside.
"I fell on my ass on the ski slopes."
ass (2): an unworthy and hated person.
"I cannot be friends when you act like an ass."
awesome: great and impressive.
"Dave's ESL Cafe is truly awesome!"