Originating from the famed "Hanson Brothers" music group, actually has very little to do with the group itself. This epic maneuver is the simple act of ejaculating into your hand, sneaking up behind a prefered female bystander, singing the line "MMM.. BOP!", and when they turn to enjoy the memorable 90's tune, you dominantly bitch slap them in the face with your juicy cum hand, then continue to shout the Hanson Brother jingle proudly.
"So Sherry came up to me at the party last night and said she loved that one 90's musical trio that was all brothers, but couldn't remember what their hit single was called, so I came back 15 minutes later with The Hanson so she would never forget again."
by Ragzilla April 27, 2010