From Twitter:

1. Mom: It's _.
Kid: Okay, Mom, but can I get something to eat?
2. Mom: After you _.
Kid: I'm hungry now!
Mom: You ate a ton. Pajamas--now.
...

3. Mom: Okay, you ate; now _!
Kid (from bed): Mom!
4. Mom: _.

a. Sleep
b. Go to sleep
c. Get ready for bed
d. bed time
e. Go to bed

Answers & Explanation:
1. d. Bed time means "the time one should go to the bed and begin to sleep."
2. c. Get ready for bed means "prepare to sleep."
3. e. Go to bed means "go to the bed room, get in the bed and sleep."
4. b. Go to sleep means "begin to sleep."