fauxthentic

Giving your upmarket bar a downmarket name. eg, The Fulham Bar and Eating House

Eating house??

sacrificial staple

the first little metal fella in a new set of of staples, destined to be cast into the void after the ker-chunk "let's staple-thin-air test" demonstrates that the machine still works after being refilled

door tetris

The ignominy of taking four attempts to open a double door, e.g:

push left door (nope)
pull right door (nope)
push left door (nope)

finally... push right (and open)

mini zorro

the universal swishy hand signal in a restaurant that signals "the bill please"