to fart out of the female pussy.

When you have air traped in your vagina {From sex} or a fart through your vagina!

When, after an extended episode of concentrated reasoning, a lady realises that she has discovered a hitherto overlooked flaw in Einstein's Relativity Theory but coherent speech is made an imp [..]

When the penis leaves thee vigina to quickly or hardly it often makes a air socket, hence making qeef while leaving the vigina. Also could be considered a vigina fart.