Ive only tried something "crazy hot" once.
The toe of satan.
As a comparison, the sausage is somehwere around 1.5-2 million scoville, the toe of satanis 9 million scoville.
It was not pleasant.
Only had it in my mouth for a little while, then it just kept getting hotter and hotter for about 5 minutes, and the peak lasted about 30 minutes.
Nothing helped take away the heat. You could swirl around milk or yoghurt in your mouth, but the second you swallowed or spit it out, the heat was back, so it was almost better doing nothing.
I like spicy things, but the toe of satan was not enjoyable.
Tasted alright the first minute tho, before the heat became unbearable.
3/10 Honeyjars.