Definitions by Mr. Fundamentals

The AJ 

Originated in the Midwest, it is a term to describe when a guy goes to finger a girl, but because he is totally trashed, he winds up getting her in the butthole. Some believe it stands for "Anal Jackhammer"

Dude, I heard you gave Heather the AJ!
Shut up man!

The AJ by Mr. Fundamentals September 27, 2005