Science lab
Was in a first-year university science course lab. Students paired off into partners at lab stations. There was this girl I always flirted with in class and she coyly agreed to be my "partner" and we had a giggle at the double-entendre. We were sat side-by-side in front of a lab table with equipment and whatnot, me on cloud nine, and angling to score a date.

The task of the lab was to calibrate a thermocouple, which required a small vacuum beaker of liquid nitrogen. The professor came round to each station to fill the beakers from a large insulated flask.

Just before he started pouring our beaker, I let go a silent fart... that smelled like the apocolypse.

As the cold liquid nitrogen filled our beaker, she said, "Ew, that stuff stinks" and covered her face with her hand. The professor was not sure what to make of her comment, and said that it was an odorless liquid/gas so it shouldn't have a smell, then he looked at me, with my beet-red face... then she looked at me, and all was clear.

We did our task in silence, and never spoke to each other again.
(curlyfries eats curly fries, Sun 15 May 2011, 22:11, 2 replies)

Still giggling
5 mins later.
(Wagane, Sun 15 May 2011, 22:34, closed)

If she'd reached (even as only a first year)
university to study science, without knowing nitrogen is odourless, you had a lucky escape.
(sarcastic fringehead feet of clay, buns of steel, head of lettuce, Mon 16 May 2011, 16:38, closed)