Idioms

To eat humble pie -accpet arror and apologise
A pig in a pole - purchasing an item without seen : disappointment
A flash in the pan -promising at start and then disappointed
To pour oil in trouble water - to make peace
Pyrric victory- A too costly victory
The sword of Damocles- any imminent danger
A wet blanket- one who spoils the fun
To beared the lion in his den - to isit and offend the person on his own grounds