Big Black Clock
Used to trick your friends into saying big black cock instead of clock, giving you the opportunity to call them gay.
Person 1: Yo bro I love big black clocks
Person 2: You love big black cocks?!
Person 1: No, I love big black clocks, gay ass.
Person 2: You love big black cocks?!
Person 1: No, I love big black clocks, gay ass.