I used to have an LP "20,000 hamburgers to go" - a radio announcer would ring up various unsuspecting businesses...

A hotel: My name is Mr Kent - did you find a suit and tie in the lobby phone booth last night?

and so on....

20,000 hamburgers - I'm from a scout troup having a jamboree locally, and we need some lunches - can you hold the mayo on 5,000, no pickle on 5,000, no pickle or mayo on 1275 ....