799
This was the first result on Google
(lemmy.ml)
This is a most excellent place for technology news and articles.
It could also be a gross sex term for a dick. During sexy time someone could say to me "yeah give me that hot tube" and I would be immediately less interested in sex.
Sounds like something that you would find in a bargain-bin romance novel.
"His hot tube pulsated, throbbing with motion" or something like that.