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1.
An article of fabric, most often an old sock, that is always kept either underneath one's pillow or stuffed between the sheets in order for quick cleanup after masturbation.
I blew my load all over myself and on my sheets, but luckily I had my bedsock handy for a quick cleanup.
by diearschmeister June 22, 2011
 
2.
Blob, Condom
Time for a shag, does anyone have a spare bed sock?
by Dominic Shaw December 16, 2003