This word stands for Dad-Poo. It is the best slang that most modern teens use. It is used when someone uses the toilet and it then smells like you entered the sewers.
1) Aww come on John, you went to the toilet and now my whole room smells like DP!
Short for "Dusty Pussy" an 80's term for an undesirable older woman.
Watching his friend dancing with an older woman at the local Ski Club Holiday Party, Chet exclaims, "Look at Bill with that DP! Watch out, Bill, she's a DP! A DP!"