A dildo that has some form of adhesive, that literally allows it to be slapped on, over the woman's vagina. The infamous danger being it detaching in a compromising position, such as pegging.
Mary stood up slapped on the Slap On and was ready to peg.
by ThatGodTodd October 22, 2014
Can you define these popular missing words?
Lets all give him a slap on.
by Bensonator_v8 July 12, 2005