Me, masturbating: uh, don’t mind me, I’m just over here jamming this ugly-ass hairbrush-lookin’ thing against my vulva in a feeble...
oscillating
While most vibrators run on rotational motors, a few toys are equipped (or claim to be) with oscillating motors. This creates a unique back-and-forth motion and, theoretically, deeper stimulation. The Eroscillator is easily the best oscillating sex toy.
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