Stupid answers that students give which made me laugh

To a diagram of a sperm, they say it's a tadpole.

To the question of how Singapore disposes of its garbage,

they say just open the rubbish chute and throw the rubbish down the chute.

It's like voila! down the chute the rubbish goes, and it dissappears into nothing-ness.

By the way, the answer is through incineration and landfills.

Of cos, its fine for a student to be wrong as long as they try. Not so fine for a teacher to be wrong. The best thing I heard was from my mom was that a teacher in my sec school told the students something along the lines of,

Solids expand when heated because their ATOMS EXPAND.