While lying in bed with a potential sexual partner in front of you it's the act of making the same shape as them and thrusting your frontal region into their nether region, ending if successful in a reach around.
Makin shapes is widely considered to be the best way to start off a night full of love making, bondage and coitus.
by duckoysterman February 20, 2011
Get the Makin Shapesmug.