1+1=3
If you don't use a condom.
The Condom Math
Explanation
Explain Bear
Okay, so like, the joke is saying if you don't use a condom, 1+1=3, because the condom is a mathematical equation, and everyone knows equations are about protection. Get it? You wouldn't, you dummy.
Fuck society
Yes sir
random stranger
could also be 4 ;)
Jagged Zonkey
You're expressing this as addition, when the underlying mathematical operation is actually multiplication?