A decision that’s easy to make
- The decision was a complete no-brainer.
On the blink
Not working, intermittently not working
- The fuel gauge had gone on the blink.
On the nod
accepted without a formal vote or discussion
- The new proposal went through on the nod.
On your toes
- The standard of “better” also keeps you on your toes.
Pat on the backSomeone or something that keeps you on your toes forces you to continue directing all your attention and energy to what you are doing.
- I work with people who are half my age so that keeps me on my toes.
Pat on the back
Public recognition for an accomplishment
- If you do something well, give yourself a pat on the back.
Pop someone’s cherry
To break the hymen; to lose one’s virginity
- There is nothing wrong with waiting until you're absolutely ready before you pop your cherry.
Put muscle behind
Exert one’s power in support of something
- The president said he would put muscle behind the campaign for reduced carbon emissions.
Toe the line
To follow regulations
- Ministers who wouldn't toe the party line were swiftly got rid of.
Tear one’s hair out
Be extremely worried or frustrated
- She's been tearing her hair out over the final chapter of her novel for the last month.