cut someone's throat
mislead
screw the pooch
fumble the bag
snapper
entangle
be one's own worst enemy
sow one's wild oats
underwhelm
be riding for a fall
Timonize
misperform
make one's bed and lie in it
come to grief
paint oneself into a corner
box oneself into a corner
make matters worse
come a gutser
miseducate
difficultate
flag
mispursue
turn Turk
blunder
throw off the trail
uneducate
reap the whirlwind
go to the goat's house for wool
hinder
discommon
flunk
fash
suckhole
fight a losing battle
eat one's young
cringe
go off the boil
go wrong
saw off the branch one is sitting on
brick
go hard with someone
swamp
undereducate
get blood out of a stone
misact
flunk out
pervert
take on water
compulse
fall
misdiscover
wrongdo
break bad
do it
require improvement
hillbilly
frosh
act up
kick someone when they are down
misfall