IGAB started when two friends were talking online and abbriviating everything. IGAB stands for I Got A Boner.
dude, i was sitting here, and that girl walked by and IGAB.
by CWBWBN April 02, 2006
1 more definition
Started by two friends talking about boys. It means in giggles and butterflies.
I'm so igab with this guy.
by meadowkiss October 21, 2010