The type of fart, when thrown sitting down, that rises upwards and is released on the side of your testicle and leg making a "fart" sound. The skin from the testicle claps with the skin of the leg.
"I tried to be secretive, but the nart was louder than expected"
"I narted while getting head, i tried to squeeze my cheeks shut but it was too late and i narted near her face instead of the bed. She felt the air of the nart."