What do you consider a sissygasm?

Curious what you all consider to be a sissygasm and what you don't. I recently saw a sissygasm post that made me question if it was one or not. Below are some examples for discussion sake, but I'm open to what people's thoughts are!

1. Any orgasm while in the sissy mindset.

2. Any orgasm as long as simultaneously receiving anal (dildo, finger, dick, or otherwise).

3. Orgasm from anal stimulation only, with minimal to no direct penis stimulation.

4. Orgasm from penis stimulation from a vibrator (e.g. no stroking)

5. Others?

P.S. I know, terms shouldn't limit your pleasure and experience. Just interested in how people think about a more true sense of sissygasm.