Their middle name.
Most of the jokes in this subreddit.
Bouncing on a buoy (boy)
John: "How bad is what "
John: revolution Paul: forgiveness George: true love Ringo: hmm, a submarine or maybe an octopus
A Presbyterian is a Baptist who can read
They both ate honey and they both have the same middle name.
Atilla the Hungry.
The same middle name.
An army of Hun-dread.