a slang term referring to a penis being squashed between two kneecaps in a sexual bdsm sex position
the force of a gladwell is not yet defined but if taken to extremes could end up with no penis at all however a light gladwell is still called a gladwell with no disearnable difference
"hey you want a gladwell"
"no that would hurt"
"indeed it would"
"well would it"
"how can i tell you as i cannot define the energy in which the act may be performed"