If you search for “David” on Urban Dictionary you will get some interesting results including:

“A formidable foe to normal people. intelligent, strong forceful. a weird hybrid of a bully and a nerd. As well as the first dictator of the America and king of the new peaceful world. Also known as Timebomb and various other variations including at least TB.”

“a very hot guy usually nice and very funny”

“A person who is hecka cool or awesome. Everyone else is nothing compared to a David.”