none
the 'funny bone' is a common misconception, it is infact a nerve which runs in a small groove in the elbow.
( Thor_sonofodin https://twitter.com/Thor_sonofodin, Tue 23 Nov 2004, 15:54, archived)

small?

( Sir Aunty Grampa Dave the Hat - Can't find glasses he likes - Ta! Cannaoogim!?, Tue 23 Nov 2004, 15:58, archived)

pardon?

( Thor_sonofodin https://twitter.com/Thor_sonofodin, Tue 23 Nov 2004, 16:01, archived)

I SAID 'SMALL!'
I thought the groove was quite a large one . . .

( Sir Aunty Grampa Dave the Hat - Can't find glasses he likes - Ta! Cannaoogim!?, Tue 23 Nov 2004, 16:02, archived)

small in relation
to the size of a sperm whale I guess.
( Zaphod's Wombat - Never did quite get the hang of, Tue 23 Nov 2004, 16:10, archived)