n. The stimulation of the taint to the point of orgasmic eruption.
(can also be used as a verb. or a dangling participle)
1. I went balls deep in that shit to the point of a taintasm!
2. My ornaments were swinging so hard agaisnt her taint I gave her a taintasm! She screamed FUCK MY TAINTUS, you animal!
3. Friday night was so awesome, I fucked my girl every way possible! I got off, she got off TWICE, and then we had simultainous taintasms. FANTASTIC.
4. Have you ever heard of a taintasm?! Me either, until it happened. Caution: Slippery when wet.
5. Stop touching my taint, or it will go off! You're going to give me a taintasm!