1 definition by avid brothel-go-er
A laugh that is so intense that you feel your ab muscles are getting stronger from it. Occurs when you are laughing very hard about something and your abs start to get sore from it.
George: Whoa man, you look ripped! Do you work out a lot?
Nathan: Nah, these muscles come from all the 6-pack laughs!
Nathan: Nah, these muscles come from all the 6-pack laughs!
by avid brothel-go-er June 13, 2010