This is one of those self-deprecating tattoos that is sure to backfire, eventually.
One hopes that he is trying to be clever, and really has an "average" schlong,
but someone is going to call that bluff someday,and this guy is going to hear those
3 little words:
"It IS small."
Extra deduction for spelling, and for the dick thing again.
What this tattoo says about the wearer:
I can't spell, and I am going to disappoint you, later.