Bisexual Erasure

Look at this crap:

This woman calls herself a “ Liberal feminist” in her Twitter bio. I wish I could say I’m surprised, but apparently I don’t exist, so I can’t.

I haven’t learned this shape shifting thing yet, where we bisexuals morph back and forth between gay and straight, depending on the sex/gender of the person we’re dating. This sounds pretty magical. Why hasn’t anyone taught me how to do this?