One trains the mind the other minds the train.
A bomb vest does something when it's triggered.
One you'll see in a while, the other you'll see later.
Curses, foiled again!
Rude"olph
Mr. Bus (think about it)
Because the teacher keeps asking about things that happened before I was born!
A schoolteacher says "Spit out that toffee" and a train says "Choo choo."
They have Conductors.
Because of the conductor.