eating jizz
When you think you're about to eat something good, but it's actually the worst thing you've ever tasted. Like thinking it's ice cream, but it's just your brother's old socks.
I thought it was chocolate sauce, but it was my dad's foot fungus.
I took a bite of the cake, and it was just my mom's hair gel.
I opened the jar, and it was just my little brother's toe nail clippings.