Masturbation Fantasies

Aside from memories of things that have happened in real life, some of my common go-to fantasies are:

Being in an open stall bathroom with a bunch of 60+ year old tradesmen who are all having loud diarrhea and talking about it, making jokes, etc.

Masturbating with a group of guys similar to those described above

Having doggystyle sex with an incredibly attractive woman (usually one I've seen in public in the past couple days)