1 definition by Maximum Meaning

Top Definition
This acronym stands for "tactical sperm dump". A tactical sperm dump is when a man masturbates shortly before having sex with a female friend so that he will last longer and not blow his load too quickly.
"So, are you going to take a TSD before you take her out then?"

"Yeah man, last time I just about made a baby."
by Maximum Meaning November 06, 2008
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