I Want a Flushie!

Ewww, gross, a what? No, Chayce has a new way of asking to hit the new Sonic burger in town during their Happy Hour (when SLUSHIES are half-price). "I want a flushie!" Then, the clincher:
"What do you want to eat with your 'flushie', dear?" "A booger!" (She meant burger, but it came out booger. Made me hungry.)