When you
fart under a blanket and then
pull the blanket down, releasing the noxious fumes into the general area.
The benefit of mushroom clouding is that because of the blanket, the
fart is frequently muffled or even goes unheard
My
wife and I were watching TV in
bed when she grabbed the remote and changed the channel. So I let one
rip under the blanket, mushroom clouding her as retribution.