Green’s Dictionary of Slang

poot v.

[a US southernism, from the Fr. péter, to fart]
(US)

1. to break wind.

[US] in V. Randolph Pissing in the Snow (1988) 73: ‘Do you reckon you could poot a little right now?’ The fellow just drawed a deep breath, and then he turned loose a blast.
[US] in G. Legman Limerick (1953) 345: There was an old maid from Bruton / Who had the bad habit of pootin’.
[US]B. Jackson Get Your Ass in the Water (1974) 159: She squirmed, she scooted, she farted, and she pooted.
[US]Eble Campus Sl. Apr. 8: ugly as spitting/pooting in church – really bad, tasteless.
[US]P. Beatty Tuff 13: Winson sniffed the air, then checked the bottom of his sneakers. ‘Hey, did you poot?’ he asked Fariq.

2. to defecate.

[US]D. Pinckney High Cotton (1993) 32: They [i.e. chickens] don’t do nothing but poot all night, but it’s good for the flowers.

In phrases

poot about (v.) (also poot along, poot around) [var. on fart about under fart v.]

to dawdle, to mess around.

[US]P. Conroy Great Santini (1977) 253: We fried Japs in Hiroshima and Nagasaki and I mean, sportsfans, we done fried ’em like eggs there, no pootin’ around.
[US]S. King Finders Keepers (2016) 29: There would be lots of local traffic pooting along from one Hicksville to the next.