Had a boat once, 36 ft. with two big Chrysler Hemi's, each with dual quads. Friends and collegues would often say "Let's take your boat and go to Catalina this weekend."
I would say "OK, will you pay for the gas?"
"Sure, and we'll bring the beer" they would respond.
"OK. That will be $60. (1975)."
"What?"
"The boat burns a gallon a mile"
"Oh"
End of conversation...
Now there was this secretary... another story.