to do this? True story from AP.

A man who lost part of his finger in a bar brawl walked out of the pub
and down the street before he noticed it was gone, police said Monday.

"He didn't know it was missing until he left the (pub)," police
Inspector Mark Kellert told The Sydney Morning Herald newspaper. "He was
out on the street and realized there was blood on his hand, noticed his
finger was missing, and went to hospital."

Security guards later found the severed finger "and a large amount of
blood" in the pub's bathroom, New South Wales state police said in a
statement.

The 42-year-old man, whose identity was not released, was being treated
for his injuries. Police brought the severed finger to the hospital, but
did not say whether it was being reattached.

I wonder if john bobbit got out of bed for another beer before he
realized his missing thing

I've fell drunk a couple of times but never anything like that
hummmmmmmmm thats really drunk