OK not the funniest joke in the world and not exactly dirty either just a little risque I guess
A married couple were honeymooning in China and were watching the Olympics as they were out sight seeing the husband found a pack of three rubbers (condoms). One gold, one silver and one bronze.
Husband: "Hey hon seen this?"
He held up the condoms.
Wife: No sweetheart what is it?
Husband: A pack of three baby and tonight's your lucky night I'm going to use the gold one and perform like an Olympic champion."
Wife: "If that's the case why not wear the silver one and come second for a change?"