Top Definition
The spermy plug that forms atop the penis shaft shortly after ejaculation. The next time one urinates the Splug flys like a champagne cork usually leading to some misguided urine.
I popped my splug and pissed all over the back of the toilet seat!
by darealjz June 01, 2010
11 Words related to Splug
To spray after rhyming.

I*ll blow my splug all over you steven
by steph2dance April 28, 2007

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