It could be a game, mag, literally anything. And what happened afterwards after you first saw it?
For me, I think it was the hidden stashed VHS I found in a desk that my parents used with a couple of magazines.
I recall the VHS had a couple of movies on it that you were your typical crappy plot...
There's a lot of games where the H scene happens only when the MC gets hit by the enemy. Maybe it's just me but I greatly dislike this because if you keep getting hurt, you'll just lose. It's like a massive tax on progressing through the game.
So why do devs even make these games in the first...
I like how people say yes and no but I honestly have yet to see any except for 1. I wouldn't consider furry stuff as that since they're more human than anything.
Although come to think of it, there might have been others like in that Bad Guy renpy game but that's content that can be skipped...