A Gaf is a person that annoys another person. A gaf is not only one kind of person it can be anyone that just bugs another it is also used as a slang amoung friends almost like "you are weird".
by Satsu&Marina February 25, 2009

by FamicomFanboy April 9, 2005

by joe-the-person-not-called-joe February 18, 2003

usually bookended by asterisks, it is used online to mean that you are surprised, or to signify wide eyes.
*GAF* seriously?
by Ishkabibble August 20, 2003

"Yo go gaf that shit over there"
by Peachez June 9, 2004

by Lynerally January 1, 2019
