Does anyone else have a problem with laughing hysterically when something goes wrong?

Not something that's supposed to be funny. I do it all the time and I can't figure out if i'm a little nuts or if other people cope this way. My boyfriend, who I was crazy about, broke up with me a few months ago and I couldn't stop laughing as he gathered his stuff. I mean, I was in hysterics. I had someone rear end my car a few weeks ago and I was laughing so hard I could barely talk to the other driver. I don't know if i'm losing it or what. No wise answers please, i'm being serious for once.