funny ha-ha

adjective2

1. •
   (informal) Humorous, as opposed to strange (the other meaning of funny).

   • What do you mean, funny? Funny peculiar or funny ha-ha? — 1936
2. •
   (informal) Humorous, as opposed to serious or nonfunny.

   • But it wasn’t a funny ha-ha smile. It was the kind of smile you have when you find a friend. — 1971