When a person straps a dildo to their head and fucks someone with it, pretty much headbutting the other person.
by F-BOMBheart March 15, 2011
Strap Head is when two women (usually lesbian or bi-sexual) use a strap-on to simulate fellatio. One woman wears the strap-on and another sucks on it, simulating a blowjob.
by SynergyFactor December 17, 2009