By user votes:
An engineer is someone who can do for $1 what any fool can do for $100.
— unknown
[Clara has gone to school in a nice new outfit. Mom picks her up.]
Mom: How’d that new outfit work out?
Clara: I like it.
Mom: How do those new pants feel?
Clara: Mom: they’re not pants.
Mom: Uh… what are they?
Clara: They’re leggings.