When someone becomes so physically intoxicated that they are going to projectile vomit all over the present company. All endangered parties must together pick up that person and collectively hurl them through the air so that they look like a dragon who breathes spew instead of fire, laying waste to the villages below.

A spew dragon is further accomplished if the high flyer believes that they are actually flying and spreads their arms like majestic dragon wings.
Oi Donnie, you wouldn't believe it, on Saturday night I went to a party and almost got killed by a spew dragon! It desecrated all within its path.
by Turnipsoup October 25, 2014
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When a chick is deep throating you and you do not warn her that you are about to cum. If she is out of breath she will spew cum all over you like a fire breathing dragon.
Dude that girl last night went all cum spewing dragon on me... had to wash me and the sheets.
by THEpitDickler May 22, 2017
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