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when someone jizzes in your ass and you immediately fart causing it to form like a spider web, if you sweat it will leave little droplets like dew on a spider web. If you keep it in your ass you can preserve it and spread your ass cheeks apart and display it and it is still a web. You could also leave it somewhere, like after you sit down you could leave it on the seat and it leaves a web-like sticker.
For Example:
"Hey Lexi I got a nice ass web when my boyfriend and I were doing anal last night"
"Really?! I've always wanted one!"
"I know, it's totally cool, wanna see?!"
by Evangeline Ingle July 06, 2013
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