Ehm, it's a matter..., ehm, when is it ? ? dark? ?
When in fact do you use them
Wait, ehm, let me think, ehm
A single exclamation mark
The question marks cast off their hooks in approval
And as if by command
Stood straight back and became exclamation marks
? ? imagine? ? that [ Lyrics from: http://www.lyricsmode.com/lyrics/a/andrea_parker/exclamation_mark.html ]