My subject choice would be
Why does the lower bun of a burger always get smaller faster that the top one?

It makes for strange angles of eating when nearing the end of consumption
( Enigmatic ™                 Voice No More                  ©, Thu 4 May 2006, 2:03, archived)

If you flip it over about half way through,
the bit left will be a paralleloburger.
(moomin-papa ; folkin class., Thu 4 May 2006, 2:04, archived)

Brilliant!
So simple, yet so perfect in it's solution.
( Enigmatic ™                 Voice No More                  ©, Thu 4 May 2006, 2:06, archived)

because of your hideous disfiguring stickyout lower lip

( glued eel /questions/questionsyoudliketoask/post1648081, Thu 4 May 2006, 2:09, archived)

This is actually the truth.

( Digeridude Lord Wellington's Beef Trapeze, Thu 4 May 2006, 2:11, archived)