also-ran
babe
beasts of venery
big game
boob
booby
butt
byword
byword of reproach
casualty
chump
cinch
credulous person
cull
defeatee
derision
duck
dupe
easy mark
easy pickings
fair game
fall guy
figure of fun
fish
fool
game
game loser
gazingstock
goat
gobe-mouches
good loser
good sport
greener
greenhorn
greeny
gudgeon
gull
hard-luck guy
hardcase
hoaxee
innocent
jest
jestingstock
joke
kill
laughingstock
leadpipe cinch
loser
case
cause
creature
danger
enemy
member
mother
prisoner
scene
dictum