competition: Best blonde joke

A blond goes to a soda machine she puts 50cents examines the machine and presses the Diet Coke button and a Diet Coke comes out she reaches into her wallet and puts a 1$ bill she examines the machine and presses the Coke button and out comes a Coke and 50cents she puts the 50cents and presses the Mtn Dew button then a person comes and says,"Ma'am how thirsty are you?" and the blond says,"Shh I'm still winning".