The flap of skin, in males, between the scrotum and the anus, which can be used for various things such as clipping flashing lights to. Grundlesac's can vary in size from droopy to so small that they can barely be noticed.
Damn Alex, that is so sweet how you can clip that pulsing belly button ring to your giant grundlesac.
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every mans dream, hard to get but when you can they are usually wild and have short skirts
The catholic girls snuck out of the house.
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noun- ejaculate after it has cooled to room temperature and began to congeal, either from male or female donors.
There was a huge meck stain on my bed after I made that whore squeal like a pig.
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