My most favorite dialog went like this:

UALXXX: Tower, United XXX heavy, ready to go, 3L.
DTW: United XXX heavy, hold short runway 3L, you're number 2 behind a
little guy back-taxiing.
UALXXX: Okay, but I don't see him.
Me: Tower, umm, "Little Guy" 12345 in position 3L.
Tower: Little Guy 12345, caution wake turbulence parallel runway, fly
heading 020, clear for takeoff 3L.
Me: Zero two zero, clear for takeoff 3L, Little Guy 12345.
Tower: United XXX heavy, clear for takeoff 3L, caution, Cessna wake
turbulence.