1 Good-looking muscular men collectively
2 the bodily appendage men possess, the love sword, the organ that begins with P and rhymes with the name of the goddess of love
1 -- look at all the manbeef in this strip joint
2 -- look at the size of the manbeef on that guy!
Manbeef was a hoax website that claimed to sell human meat. The site is no longer online, but it can still be found at the Internet Archive.
Manbeef was such an elaborate hoax, even the FBI fell for it.