The inner lining of men's swim trunks. Also described as, "the white mesh lining that constantly rubs up against your nutsack and can potentially cause immense amounts of level-10 chaffage. The pointless ballsack support that will only cause you more pain and suffering than profit. Often removed due to the fact that it is utterly pointless.
Dude, my schlebin is digging into my nutsack, I gotta rip this shit out.

This schlebin has got to go. I need to perform a schlebinectomy, stat.
The schlebin in my swim trunks has dug so deep into my crotch, its ripping my pubes out.
by SomeSaturdayGuy May 22, 2017
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