Allegedly:
At the Yalta Conference, Churchill, Roosevelt and Stalin were trying to score points against each other.
Roosevelt asked Stalin if there was anything that USA could give to USSR?
Stalin said "Yes, we're low on condoms. Standard, 18" Russian Condoms"
Roosevelt said to Churchill "But we don't have 18" condoms"
Churchill said "1st, make 2,000,000 18" condoms, 2nd get them ready for shipping to Moscow. But make if you want to score the points, put them in crates marked "USA Condoms - Medium Size" '