“You can sniff my mint”

What stands out to me in this ad is that the T-shirt only is available in Small, Medium, and Large sizes. A T-shirt promotion today would probably drop the Small size and add XL, XXL, and XXXL sizes, and maybe even XXXXL. The fattening of America (and much of the world) continues unabated. I often think it's not just the number of humans that's a factor in how much we're stressing the planet, it's also the average weight of far too many adults today.

To be trendy, they'd have to call the sizes: Venti, Ingente, Imbottito, and Tenda.

Would any of the scent survive the first machine washing?

The Lolita-esque nature of this grosses me out. A young teenager (with pigtails, yet!) sits cross-legged toward the camera; she plays with her hair, cuts her eyes to the viewer and suggests a quid pro quo in which she will allow you to sniff her. Yuck.

This screenshot actually makes her look older. She appears to be about 12 in the original. See it here: https://www.reddit.com/r/vintageads/comments/a0en0b/if_you_scratch_my_back_you_can_sniff_my_mint/

Eh, she's 20 if she's a day.

Then again, I may have watched too much "Gentlemen's special interest" material on-line.

The sort of girls I went out with in high school would have worn this shirt had it come out a year or so earlier (I graduated in '75). And my high school would have let them wear it there too! The dress code has since been tightened up a bit...