Top definition
Spermagulation is semen clogging the urethra. This side affect occurs if you do not urinate shortly after sexual intercourse or masturbation. It can become quite painful if this is not taken care of post haste.
"SHIT! My penis is on fire! I should have cleared out my urethra sooner than later to avoid the retched spermagulation."
by Grantyy August 31, 2008
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