Was rather showing than telling and not just to me but everyone. But my geography teacher was doing a picture show of his hikes (don't even remember where). And then he comes to one image where he is showering in the mountains, completely naked.
Before this pic, he only stayed on each slide for a couple seconds, but on this one, he stayed what felt like eternity before saying something like "hehe, the girls should probably look away now".
Felt like the dude was a pervert who just wanted us to show his nudes...
But it reminds me of a story from my father where the geography teacher mistakenly put the sex ed slides into the projector. When your script says Netherlands but the projector shows something ... slightly different.