to talk about or plan on doing some activity with others whithout going through with it; especially if this hapens at the last moment.
John: Carmela keeps saying she wants to go for dinner with me, but then she always rainchecks last minute.
James: Man, you shouldn't take that shit. She farts without shitting, man!
Bob: Jim said was gonna come along tonight, but then he totally ditched us yet again! That is to fart without shitting, man!