Is where you have left someone outside a car a proceed to drive off. While putting up the automatic window start to move upwards in time with the window crying "Toodaloo Mother Fucker"
Dave: Hey let me in.
Choi: No
Choi: "Toodaloo Mother Fucker"
Another word for 'Goodbye', generally used by Chinese Mafia Bosses while bidding farewell to the family members of a kidnapped guy (as shown in the youth-centered, 'Hangover').