(someone's) ass is on the line

American, very informal!

if someone's ass is on the line, they are in a situation where they will be blamed if things go wrong.

I hope this conference is a success - my ass is on the line here.

• That was a walk and a half!
• the ABCs of
• the ABCs of something
• the alma mater
• the answer to prayers
• the answer to someone's prayers
• the answer to your prayers
• the apple of eye
• the apple of someone's eye
• the apple of your eye
• the avant-garde
• the baby blues
• the ball is in court
• the ball is in someone's court
• the ball is in your court
• the balloon goes up
• the bandwagon effect
• the bane of life
• the bane of your life
• the bare bones
• the battle lines are drawn
• the battle of the sexes
• the be-all and end-all
• the beau monde
• the beauty of