Gírias - A (Slang)

airhead: stupid person.
"Believe it or not, David can sometimes act like an airhead!"

amigo: friend (from Spanish).
"I met many amigos at that cafe."

ammunition: toilet paper.
"Help! We're completely out of ammunition!"

antifreeze: alcohol.
"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.
"This school is truly awesome!"

Source: http://www.eslcafe.com/slang/a.html