We were in our Seneca performing the pre-takeoff run-up at Orlando Executive Airport when we heard this exchange on ground control frequency:

Cessna: Orlando ground, Cessna Two Three Four, clear of the active.

Ground: Cessna Two Three Four, taxi to the ramp.

Cessna (still on ground frequency but thinking he'd switched to unicom 122.95): Executive Air...ah, this is Cessna Two Three Four...we're going to need some gas.

Ground: I've got plenty of gas, but I don't think it'll work very well in your airplane. Try Executive Air on 122.95.