when someone lets out a fart. however there are all different types of farts. there are some which are really and i mean really loud that
practically sshake
the windows but make no smell at all. and then there are the SBDs (
silent but deadly) which rele stink but no ones knows whop did it hence the name. but then there r the ones ur dog makes when he eats cheese. i mean have u ever smelled a dog fart? due the ones which make ur eyes burn and ur lungs feel like they have shrivled up and died in ur chest?!?! phew!