I confused "poppers" with "uppers". It appears "poppers" relax your sphincter to the point you can drive a small van up your rectum. Deifferent strokes for different folks!
I hear it's big in gay nightclubs gets u all buzzed and horny... probably an early version of E. I knew a guy who did it back in the crazy-80's and said it gave a short lived buzz and wore off pretty fast so u gotta keep snorting it every few minutes.