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Where you shit on a female's chest and then proceed to act like a veloco-raptor guarding a freshly laid dinosaur egg.
Fred was so chuffed. After he laid that brontosteamer on Wendy's chest, he stayed up all night keeping watch for the Turdburglar.
by Jatchy McJatch Jatch December 28, 2009

Words related to brontosteamer

boston steamer egg layer poo guard stool sentry turdburglar