Well obviously there was no 'that's not pee' moment for me, but I remember the hitting the FANTASTIC sensation just beyond super good for the first time when I was about 8. Was years before I realised that what I was doing had a name and that the fantastic sensation also had a name.

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"Time flies like an arrow -
Fruit flies like a banana"

M Y - N A U G H T Y - P I C T U R E S ! !