Strawberry Cheescake
A Strawberry Cheesecake is when you go down on a female, and find out not only is she on her period, but she has a yeast infection.
Example:
I thought I was in for a rainbow kiss with my GF, but it ended up being a Strawberry Cheescake.
I thought I was in for a rainbow kiss with my GF, but it ended up being a Strawberry Cheescake.