They especially like it when you grab them in public and say, "Come on baby I just want to show everyone that I love you(r tits)"
US: hooters, bazookas, gazongas, knockers
UK: fun bags, Bristols, jugs, baps, melons, knockers
SPAIN: Cocos, domingas, tetangas, papayas
CZECH REPUBLIC: Mliekarne (refers to a shop that only sells milk)
RUSSIA: Grudis, siskis
That roller coaster was TITS!