Student: "Mrs. Mat, the turtles are trying to drown each other!"
Me: "They're fine, leave them alone."
Student: "Mrs. Mat, they're stuck together!" *pulls them apart*
Me: "Noooooo!"
Everyone: *realizes*
Me: "AHHHH!!! The lady who gave them to me said they were both girls!!!"

No learning occurred that day. Well, no math anyway.