(Verb) Acronym standing for Dry hump meaning to engage in all of the motions of having sexual intercourse while still wearing your pants or underwear.
(See levi lovin)
David, after a particularly vigorous D.H. session with Ivy, had to change his spooge soiled pants.
Back in my college days, a D.H. was our designated "ho" or designated hump. Basically whoever we were doing at the time. Gotta love baseball, though, cause that's were we got it from.