Your ___ is as good as mine.
Your guess is as good as mine.
Once in a blue _____ .
-Moon
If you fancy someone, you are said to:
have a crush on someone
couch _____ . 
-Potato
Cost an arm and a leg
-Very expensive
You snooze, you _____. 
You snooze, you lose.
_____ sheep.
-Black
Another way of saying that you broke up with someone is to say that you: 
dumped someone
To go _________. 
Bananas
Call it a day
-To stop working on something
She's feeling a bot under the _____. 
She's feeling a bit under the weather.
_____ market.
-Black
When you go on a date with someone you don’t know, you: 
go on a blind date
Don't cry over spilled _____. 
-Milk
Hit the sack
-To go to sleep
Well, it's _____ time!
Well, it's about time!
This idiom means "to feel sad"
-To feel blue
An expression meaning to get married to someone is to: 
get hitched
_____ in the oven 
-Bun
Cut someone some slack
-To don't be so critical
I has one too _____ last night. 
I has one too many last night.
This idiom means "to reveal your real character"
-to show your true colors
When you ask someone to marry you, you: 
pop the question
_______ of my eye 
- The apple
A penny for your thoughts
-To tell what you're thinking