Humping Tourette's Syndrome

I have a rather ridiculous problem that I like to refer to as the Humping Tourette's Syndrome. I don't mean humping as in the literal act of sex, but rather the act of furiously pumping my crotch back and forth in order to represent the act of sex. If I have a few beers in me I never know when an attack might occur, but when one does it is always at a highly inappropriate time, although I'm uncertain if there is ever an appropriate time for feigned humping.

Last night my husband's friend joined a group of us at a local bar for New Year's Eve. He is the same friend who had sexual relations with my married friend at our wedding after party, and a few girls in the group knew of his philandering. In fact, we had discussed it earlier in the evening. When he arrived at the bar, my husband brought him over to our table to make introductions, but before he could begin I shrieked, "HEY! HEY! This is the guy!" and followed with frenzied humping motions. The five or so girls at the table exploded with laughter and/or looked at me as if I were insane, my hubby's poor friend turned around and walked away and I felt like the biggest dumb ass alive. I seriously had no idea I was going to do that. I just turned around, saw him and immediately began making humping motions like some sort of crazed banshee. The attacks always come without warning.

At my wedding reception two weeks ago, I made humping motions in front of my mother when talking about consummating our marriage. Fortunately she's used to my odd behavior and didn't appear too shocked, although my friends found it awkward. I've humped the air while singing Hangin' Tough at a karaoke bar (on stage of course) and while recounting the karaoke incident to others. I just have no control over the motions of my crotch sometimes. It's a dilemma indeed. Anyone else share this problem?