Warning label on 
Nytol (a sleep aid): "Warning: May cause drowsiness."

Sign in an optometrist window:

If you don't see what you want, you've come to the right place. 

Klatt was telling me about growing up in NYC, working at a 
local fruitstand.  An elderly woman came up to the stand 
asking if we had any "dates".  My friend and working partner
told her that we didn't have any "dates".  She then asked if we
had "nuts".  My friend said, "Ma'am, if we had 'nuts' then we've
have 'dates'."