Underground tunnels made to deliver heat (in the form of steam) from a central heating plant to multiple buildings. Commonly found on college campuses. Often retrofitted with wires to deliver electricity or telecommunications. Sometimes used by students or other adventurers for recreational purposes, see urban exploration.
We found an open hatch that led into the steam tunnels, and spent a few hours exploring the campus from underground.
by Professor Slats November 1, 2008

by hoho_holidays November 30, 2016

A combination of a Cleveland steamer and a Dutch oven. You shit on your lovers chest and immediately trap the warmth and scent in by holding the covers over them.
by SteamFurnace October 3, 2020

by Fredward503 June 28, 2009

This is when you take 2 maybe even 3 packs of pudding depending on how hungry you are, lean back and pour the pudding inside your asshole. Then you let it sit there for about 4-6 minutes so it gets just the right taste(shouldnt shit for a couple of days) and then you let the person who wants it eat it out of your asshole.
by Idonteatpudding October 12, 2011

Late at night as I suffered from insomnia and indigestion, I lifted my ass and relased a steam biscuit that woke my dog midsnore and sent her running to the other side of the room
by Bothar the Mignificent November 8, 2007

by kreecher August 16, 2003
