frotting means: Rubbingholdingmasturbating two penises together for sexual pleasure. Both men should lie face down or stand in front of each other, so the penises’ undersides touch. This allows one to simultaneously masturbate both penises. You may feel more sensation from the warmth and stimulation of contact with the whole length of your shaft than you would from normal mutual masturbation. The combined pre-cum will lubricate the fingers between penises’ heads and can cause stimulation. You can also hold two penises that face in the opposite direction together, one at a time or lay down in each direction. (in Community Dictionary, added by Evaristo Hidalgo)