Top Definition
to blow a huge load of semen in large bursts
After she sucked my dick i thundercummed all over her
by jizzking21 June 27, 2013
When a man has an extra large orgasm with body convulsions, and screaming. Can sound like a jet taking off.
I asked Veronica if she had a large uterus because I knew my thundercum would fill it up.
by Thundercum in your face December 17, 2009

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