To slowly invade the genitalia of someone of the opposite sex. Usually done in an alluring manner, traditionally on a bed, but certain persons prefer the use of the bathtub (a large porcelain structure with a sunken base used for bathing).
Jacob: Oh yeah, I met a girl last night and I think I'm going to pamph her now.
Chris: Good on you, mate
Chris: Good on you, mate
by The Pamphlettes February 26, 2011