Top Definition
Post intercourse, the man ejaculates into his hand, then winds up the Suicidal Semen Fastball firing it at his partner as fast and hard as he can, flinging the semen all across his partner's body.
" My boyfriend launched his Suicidal Semen Fastball at me, plastering semen all across my face. There were no survivors."
by Krumm and Oblina October 17, 2010

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