It is when you are having doggy style sex with your lady friend, and a gay homosexual walks up and tickles your balls from behind.

While riding on the back of a motorcycle you reach around and place your hand in the crotch area of the driver. To give the full effect you may choose to slowly move your hand within the crotch area.

Hopefully the driver is someone of the opposite sex of you otherwise this could be considered a mistake (see *mistake*).

Noun: When a girl attempts to give her boyfriend a handjob whilst he is distracted by Halo Reach.

Hand Job while ridin ur bitch on the back of ur Hog.

A Richmond reach around is when two people are booty dancing and one dancer reaches behind their back and jacks their partner off.

The Constantinople reach around is where one male is laying back on the floor and the other male is squatting over his face. The male on his back then proceeds to give a thumbs up sign and finger the other male's asshole

Putting one's hands between a man's legs, from behind, and grabbing his testicles.