It’s piss and women who squirt were just unable to control their bladder while having an orgasm so came up with a sexy term for it to avoid embarrassment. Then it became a fetish and a porn category so women stopped trying to hold it in so much because why would you spoil your orgasm to save yourself embarrassment if the guy is turned on by it anyway. The “squirter” narrative only exists for dudes too immature to handle the reality of women’s bodies being grossed out by a bit of widdle.
My last girlfriend would do it when she came and feeling that nice warm gush all over my cock and balls was how I knew I’d done a good job.
TL,DR, it’s piss but that’s fine.