The act of situating that fine lady of yours--while in the splits position--on your rod and spinning her around in circles. Named for the motion's resemblence to the rotation of helicopter blades.
Guys! Guys! We finally did it! Mildred got on me last night and I totally gave her a ride on the swellicockter! Man, she spun around like a TOP!
When at a hot, crowded concert you take your sweaty t-shirt off and swing it around your head in an attempt to show enthusiasm for the music and it sends out a rank wave of BO to all innocent bystanders.
At Lollapalooza lots of hot, sweaty guys were smellycoptering at the Killers concert. Unfortunately some of them were so enthusiastic I got smellycoptered in the face.