After a diner had finished his meal at a restaurant, the waiter brought him the bill, which read,

Omelete: $2.00

Tea: $.50

Take this back," the diner said, "And rewrite it as omelette with two T's." The waiter obliges, as he takes the bill and leaves. A few moments later, he returns with a new bill, reading:

Omelete: $2.00

2 teas: $1.00