When someone's butt is suddenly visible with the type of pants they are wearing, unlike any other day. Cake is referring to one's butt.
Friend 1 (Girl)- Do these pants look good on me?
Friend 2 (Girl)- Dang girl you lookin like a snack!! (Lookin hot
Friend 3 (Girl)- YeeeezzzzZzuh!! Is it my birthday?!??! 'Cuz I see cake!!
If someone says this to you it means that your butt or booty looks good in what ever pants you're wearing. They're complimenting you unless said differently lol.
1👍 1👎