When is a sense of humor attractive..wheni is it not?

Generally, I think a sense of humor stops being attractive when the humor is about things that are considered gross or taboo. Dark humor and toilet humor can be effective, but they're not going to win much booty.

when it is at the unapologetic expense of someone else

I think intially girls like it...then it gets annoying...

It's mostly attractive always unless the person doesn't respect somber occasions like funerals

on most days it is..... but, usually not during funerals and similar events.

When it’s cruel, not attractive. To me.

When it's used to dismiss real feelings.