Schmackel is the sound that Smegma makes during sex!
When your knocking the back out of it and you hear Schmackel - schmackel - schmackel - schmackel, your hearing smegma in action ;)

by n7v.net April 6, 2006
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A glob or a pile of shit, jiz, spit, etc
Someone better clean up all that schmackel before it hardens
by Mj2020 September 1, 2018
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