With apologies to Merlin Mann; brickbats and kudos to Chris for the pointer to the original inspiration, and his contribution of the second item, respectively.
- FORTRAN on Floats
- PL/I on Pontoons
- Smalltalk on Stilts
- Algol on an Alpaca
- REXX on Rollerskates
Update: Chris points out that Lisp on Lines exists, and is not a joke. Okay, well, it exists, at any rate. And its acronym, by accident or design, is LoL. Simula on Smack and Haskell on Hash cannot be far behind.