I was basically a splindly but evidently cute twink when I was in college, and I got cat called fairly frequently whenever I was out in the LGBTQ/Lots of Bars and Clubs district.
Sometimes it was drunk girls, more often it was drunk gay/bi guys.
One time that I distinctly remember, a guy and a gal were out on the sidewalk tables, the guy (seemingly dared to ask by the girl) waved at me and asked me if I was 'trisexual'.
I thought about it for a bit, and responded '... yeah, sure?'.
( I had made out with a guy once in a game of spin the bottle, not half bad!)
Guy got up and kissed me on the cheek.
... The next day I told a friend that had happened, and they said something to the effect of 'well that makes sense, you are a bit of a twink'.
... And that was how I learned what a twink is.
This was back in the late 00s and early 10s, and while I'd always been accepting and nondiscrimantory of anyone based on the way they dress or their sexual preferences... I hadn't really been exposed at all to any LGBTQ history/culture/terminology at that point... tended to spend too much time studying.