Silly Sally likes balloons, but not party hats.
Silly Sally likes eating pizza, but not burgers.
Silly Sally likes using alliterations, but she doesn't like Metaphors.
Silly Sally likes browsing Reddit, but not Stack Overflow.
What does Silly Sally like?
[Note: You can test things out in the comments, and Silly Sally will tell you whether she likes it or not. But you have to give the items in pairs.]