trivia Q??

[Yeedy Boy]

There was a man at a restaurant. A waiter gave him a bill. The man looked at the bill and wrote this on the bill:

10204180

Then he gave the bill to the cashier guy, not giving him any money. The cashier guy nods meaning that he understands the man. The man walks out of the restuaruant and goes home.

What does the numbers mean??

PS.
-not credit card number, nor phone number

hehehe
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or if u know the answer
Sammy Hagar the Horrible
you have part of the answer. you don't have the whole of the answer

[Sammy Hagar the Horrible]

.... for I ate nothing

[Jimbo]

The message reads "I owed you nothing for I ate nothing"
"1 02 0 4 1 8 0"