an obscure euphemism for, like, a really fucking critical moment. as in, if someone says "you'll know when" well when you have twenty minutes of oxygen left is prolly a pretty good indication of "when."
"yeah, so when i only had twenty minutes of oxygen left I figured it was pretty clutch and remembered when my future self said "youll know when" and figured it was pretty much when, so i wnt for it."
by thanethedane August 22, 2008
Get the twenty minutes of oxygen left mug.