Make them wipe their screen because they think text is a smudge.
GetDate() (I really hope this doesn't do well, so cheap, so stupid, just had to write it when I thought of it)
An I-Don't-Think- He-Saurus
When there's white-out all over the screen
Please wait...
Deleted
End your text with "this message will self destruct in 10 seconds"
Oh, you don't know I won't ask you to wipe my bum then.
A soviet