Important Punctuation So little Timmy is at school and for show and tell, he drew a dot on the board. The teacher asks him, what's that? Timmy then replies, it's a period! Teacher, what's so special about it that you brought it in for show and tell? Timmy, I don't know, but this morning, my sister said she missed hers. Mommy fainted, Daddy got a heart attack, and the man next door shot himself in the head.