Customer: yea i just got a new grill.
Hank Hill:ok you can have 2-100 gallon tanks for $220.
Customer: wow thats a lot, and seems expensive.
Hank Hill:No, no! With propane, the sky's the limit!
A three-carbon alkane, which is unlucky enough to have a name which does not specify how many carbons it has (like hexane or nonane do).
Confuses orgo students.
Formula is C3H8.
Pyromaniacs are fond of this stuff.
And again, confuses orgo students. A lot.
Orgo student: "Huh? WTF???!"
OWL: "Both I and Marvin Sketch despise you equally, and a lot."
Orgo student: *cries* "Whyyyy?...."