pillow-case cum-stains
pillow-case cum stains are the tell-tale ivory-colored remainders of cumgasms that a guy gets all over his wonder-pillow when he fucks it and blows his load.
When I was a teenager, my Mom asked me what the stains were on my pillow-case -- I didn't tell her they were pillow-case cum-stains -- I told her they must be slobber stains of mine made when I was asleep!