galliardo - A fart that comes at the worst time. It's like your butt is

A fart that comes at the worst time. It's like your butt is trying to ruin your day on purpose.

I let one rip right before my big presentation and my whole speech was ruined.

I farted during a date and my crush ran away.

I let one rip in my sleep and my mom heard it from the next room.