"Summer Butt" is the misty, wet condition of your butt when you have been working outside or in the heat of summer. It is similar to "Swamp Ass" or "Monkey Butt".
by Deeeeee November 28, 2007
It is originated from Barbie in a mermaid tail that had a song that said summer sunshine which was later changed to summer butt touch. The word means to go to a beach in Malibu in the summer and start touching boy's and girl's butts regardless of your gender.
by OllieKazam December 22, 2017