Underwear that you keep in the back of your drawer just in case but they are no longer part of your regular wardrobe. IE they are ugly and your partner doesn't like them.
Farting onto the back of the person's head who is sitting in front of you, while seated in stacked, row-style seats typically found in arena or stadium venues.
Derrick, while enjoying a fine hockey game in the nosebleed section, farted . Unfortunately, Derrick did not backboard the fart thus seeping it out via the front onto Dylan's head, who was seated head to crotch level in front of him. The fart's heat gave Dylan a hot neck.