fartlet suction
When she starts to suck in air with her ass and fart it out after u nut inside it.
Him: "Imma nut bby", *nuts
Her: *ass starts gaping and gurgling
Him: "whoah, she's doin' the fartlet suction"
Her: *ass starts gaping and gurgling
Him: "whoah, she's doin' the fartlet suction"