When you attempt to let out a large toot, but instead are left running to the bathroom with a little more down there than you wished for. Can damage underwear beyond normal repair.
Aitanna just let out a tooter butter! Oh goodness she's going to need to shop for new underwear soon, she's running out!
by JRdanbury March 23, 2016
Get the Tooter Butter mug.