Sniper's Nightmare
Used to describe a person who walks with their entire body moving side to side since they typically have one dead leg. The phrase “Sniper’s Nightmare” alludes to the difficulty a sniper would have in assassinating them if they were the intended victim.
“Old Sloppy Tony is a total sniper's nightmare the way he walks!”
sniper's nightmare
A very, very thin person.
"Look at that Paris Hilton! She's a sniper's nightmare!"