Bed sheets stained with spooge because you masturbated and then subsequently ejaculated onto them.
Monkey sheets are frequently characterised by having a queer odour.
{Beavis and Butt-Head dressing themselves as ghosts for Halloween}
{Beavis}: Hey Butt-Head, this sheet smells funny.
{Butt-Head}: Yeah, huh huh. Those are my special monkey sheets.
{Beavis}: O fuck! Get it off! Get it off!! GET IT OFF!!!
Trucker's slang for the log books they are usually required to take along on their trips. Some truckers hate taking these along, because they have to document all sorts ofinformation that may affect how much money they make.