Green’s Dictionary of Slang

1. to destroy.

1901		Boy’s Own Paper 27 Apr. 467: Gale after gale [...] Nearly pooped half a dozen times. But I say, old man, the sea isn’t built yet that can poop our bonnie barque.
1930		D. Hammett Maltese Falcon (1965) 393: ‘You wouldn’t want the kind of information I could give you, Bryan. It’d poop this gambler’s-revenge-scenario for you’.

2. (orig. US) to tire, to exhaust.

1929		E. Hemingway letter 4 Sept. in Baker Sel. Letters (1981) 305: Write [...] when your [sic] not too tired from work. I know how damned pooping it is.
1949		J.T. Farrell ‘Slouch’ in Amer. Dream Girl (1950) 101: Christ, he was pooped all the time [...] Only she wouldn’t have pooped me like she did Val. I never met the girl who could poop me.
1957		‘Weldon Hill’ Onionhead (1958) 263: ‘[H]e’s too pooped to cook good any more’.

3. to waste, to throw away.

1935

(con. 1920s) J.T. Farrell Judgement Day in Studs Lonigan (1936) 721: To think of all the dough he had pooped away since he had started working.

4. to ruin someone’s enjoyment.

1959		W. Burroughs Naked Lunch (1968) 102: This is your doing, A.J.! You poopa my party!
1989		H. Rawson Dict. of Invective (1991) 308: The poop who poops out is derided as a party poop(er).
1994		J. O’Connor Secret World of the Irish Male (1995) 215: Mr Roethlisburger looks at his watch, blows his whistle and poops our party, bigtime.

5. (US campus) to fill in, to explain.

1963		F. Kohner Affairs of Gidget 112: I just sat in a daze, listening to Mimsy, pooping me in on their elopement.
1978		L.K. Truscott IV Dress Gray (1979) 429: You can help me pick a topic and poop me up on how you do those papers.