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School teacher arrested for shoving entire class through a man's

Fully working digestive system (preview)

[50/50] A very funny video explaining the whole digestive system

My biology gave mommy some extra lessons. He taught her about

Octopuses, Squids, and Cuttlefish expell gas from their siphons.

hey! want to take a ride through my digestive system this weekend?

Probiotics are good for your digestive system! (26)