get (your) own back

to do something unpleasant to someone because they have done something unpleasant to you.

Fiona had deliberately stopped me getting that job and I was determined to get my own back.

She got her own back on her unfaithful husband by throwing a pot of red paint over his brand new car. (often + on)

• the final straw
• the fine print
• the [first/highest/next etc.] rung on the ladder
• the first rung on the ladder
• the first string
• the first thing
• the first thing in the morning
• the flavour of the month
• the four corners of the earth
• the four corners of the world
• the ... from hell
• the front office
• the fruit of loins
• the fruit of your loins
• the full monty
• the funny thing is
• the fur flies
• the game's up!
• the genie is out of the bottle
• the ghost at the feast
• the gift of the gab
• the glory days
• the glory days of
• the glory days of something
• the gloves are off