Here are some Valentines Jokes...but the trick is the answer is in code form.
What did one pickle say to the other?
!xm xt llxd txxrg x nxxm xxY
What do farmers give their wives on Valentine's day?
!sxssxk dnx sgxH
What did the chocolate syrup say to the ice cream?
!xxy nx txxws m'x
What is a vampire's sweetheard called?
What did the stamp say to the envelope?
!xxy nx kcxts m'x