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.
by ThatGodTodd October 22, 2014
Get the Slap Onmug. by metal gear ray July 4, 2005
Get the slapsmug. by t barber April 12, 2006
Get the slappingmug. by NinjaPleaaasssee May 9, 2011
Get the Slapsmug. 

