When you bust a fat nut on your chest and use a shirt to wipe it up and accidentally wear said shirt the next day.
Fred: “Whoa, Carl, looks like you’ve got a Turkish Poncho”
Carl: (Blushing, embarrassed) “It’s icing I swear”
When a man uses a shirt to clean the cum off himself, and unknowingly wears it the next day with all of the dried cum stains.
"I wore a turkish poncho the other day without realizing it."