When two people sit on the same swing, face to face, creating 8 "legs". Thus, spider swing.
A non sexual-version of the swinging spider.
Search spider swing on youtube and watch the first video.
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A process in which two people defecate in the same toilet; achieved as one person straddles the other (like a spider swing), and defecates through the empty space in front of the other's crotch.
I couldn't hold it, so we took a spider shit.
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