By user votes:
An engineer is someone who can do for $1 what any fool can do for $100.
— unknown
Clara: Dad, when’s Arthur Lutha Kid’s Day?
Timothy: Uh… what?
C: When’s Arthur Lutha Kid’s Day?
T: Ah… I don’t think I understand…
C: Arthur Lutha Kid’s Day!
[long pause]
T: OH! Martin Luther King Day!
C: Yeah.
T: January.
C: Oh.