Multiple joke

[weare]

Someone in a community we belong to had posted this joke. They heard it on comedy central. I just found it to be way too funny. Usually I don't find jokes that make fun of a group to be all that funny, or I find them to be offensive. But, this one made me really laugh.

My sister was recently diagnosed with multiple personality disorder. Thats not something to laugh about.

The other day she called me and my caller ID exploded...