have fun with someone—
1. enjoy a good time in the company of others:
- Ashlyn was a girl who just wanted to have fun with her friends, play sports, and everything else a girl would do.
2. derive pleasure from ridiculing or taunting a person:
- They were about to have some fun with “the old man,” as they generally called the Captain.
3. (euph.) used with sexual implication:
- The communications contained overtures for a meeting and indications that he wanted to “have fun” with her.
make fun of someone—find smb. amusing; make a person appear ridiculous:
- I don’t understand why you’re always making fun of me.