When one is unsure whether or not they are defecating or being fartaceous. Poot-sharting can be a somewhat scary experience for those poot-sharting. Poot-sharting is also very rarely used with correct verb conjugation and is often purposefully used in defiance of English grammar.
“Uhhhh… Jombly… I uhhh…. I poot-sharting!”
“Ah man. I poot-sharting again.”
“I forgot to poot-sharted today.”