When you nut in your girls mouth underwater and she has to swim to the surface with her cheeks full.
by Jerome Tyrone February 28, 2019
A goatgasam is a sound that can be made during orgasm that reminds the other party, if there is one, of a goat's vocal projection.
Billy:When Sally came, she screamed my name like a goat, oh Billllllyyyyyyy.
Jake:She totally had a goatgasam!
Jake:She totally had a goatgasam!
by Jerome Tyrone August 20, 2007