Che Grimsdale's post below reminded me
I had the same problem when I was a child with the Llama joke. It sort of goes....

Beware, the Llama spits.

He was, and it did.

Took me until my late 30s to 'get it'.

(when that happens though, you can almost feel the lightbulb going off over your head!)
*edit. to keep in with the QOTW, I thought men and women, you know, 'did it' standing up. Well, wasn't too far wrong...
(Monkee girl not a monkee, not a girl, Wed 25 Jan 2012, 1:14, 8 replies)

I don't
get the joke either :(
(apeloverage committed the vile act of onanism on, Wed 25 Jan 2012, 2:11, closed)

'Be where'

( Wet-chinned bag shanker Cannot parse Wogan, Wed 25 Jan 2012, 8:11, closed)

I still don't get it.
Could it be that it's not actually funny?
( monster munch person, man, woman... camera... TV?, Wed 25 Jan 2012, 8:36, closed)

It reads as "Be where the llama spits" - as an instruction
IE: Oi! You! Be where the llama spits!

He was (he went to where the llama spits), and it did (the llama did spit, and he was where it spat).

And thus the joke is now very, very dead.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Wed 25 Jan 2012, 10:09, closed)

That is dreadfully unfunny.
and I say that as a dreadfully unfunny fucker myself.
( scarpe We Stole Bikes, Wed 25 Jan 2012, 13:37, closed)

I concur.
It's even less funny than Russel Howard.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Thu 26 Jan 2012, 11:01, closed)

I'm not sure whether I haven't got it or it just isn't that funny.
( 6821isnotmyPIN Bored cig., Wed 25 Jan 2012, 3:22, closed)

I didn't get the 2 nuns in a bath joke
until waaay too many years after I should have.
(robneymcplum spiced up his life on, Wed 25 Jan 2012, 16:15, closed)