Sidney has a problem with premature ejaculation, so he pays a visit to a 
sex shop for a remedy. The clerk hands him a little purple can and 
says, "This is Stay-Hard spray... put on a little and you can go all 
night!"
Excited, Sidney takes it home, stashes it in the cellar on a shelf, and 
waits eagerly for bedtime. Later that night, he sprays some on his member 
and then goes upstairs to his wife. To his utter disappointment, however, 
the remedy seems to make him orgasm quicker than ever.
The next day, Sidney returns to the sex shop, angrily slammed the can down 
on the counter, and snaps, "This stuff makes me worse than before!"
Upon reading the label, the clerk asks, "I don't suppose your hid this 
stuff on your basement shelf, did you?"
"Yeah, so?"
"You must have grabbed the wrong can, sir... this is Easy-Off."