Well I’m gonna be honest I’ve thought of that myself. If I was ever gonna off myself that’s the preferable way for me.
I imagine before you’d fade out, you’d feel higher than you’ve ever been and before you passed out you’d realize you fucked up. Kinda like those times you pause and realize “shit I’m a lot more fucked up than I planned….” but you know “I’m fucked us and I’m actually about to die.”