Answer:
1. When my mom says my room is a pig pen, she says my room is messy.
2. Joey is a clown because he is very funny.
3. When people call someone an angel, they mean that they are well behaved and sweet.
4. My friend is whip smart because he can answer questions really fast.
5. My sister is as fast as a cheetah.
6. My mom calls my brother a devil because he is very naughty.
7. Thee tree is a giant because it is so big.
8. My friend is like a cookie because he/she is the sweetest.
(Do not use the he/she just choose one i just used it for references)