Rum-Rum for a strong guy.
Cute nicknames for your guy friend. Romeo maybe your guy is cute and has a good way with words. Yummy â A cute nickname for a really good friend. Though TBH you can go on to use them sans restrictions.
Wisecrack A funny one for a humorous guy. Raindrop because like rain drops he is a force of nature to you and your personal growth. Pluto For a clod male friend.
Yoda â A cool name for your male best friend that always the solution to your problems. Excuse guru Have a list of excuses. Bitsy  A cute nickname for your tiny guy best friend.
Nicknames for best friends should be according to their nature. Blood A cute nickname for a close best friend. Buttercup is a great nickname to give to the friend of yours that is as sweet as a buttercup.
Brethren  Biblical word for brothers. You can have funny nicknames for friends. Boyfriend yes some people like to call their guy boyfriend as if its not obvious enough Lover Boy.
10 Meaningful Nicknames for your Boyfriend. You could also use this nickname on a friend that reminds you of Buttercup from The Powerpuff Girls a famous animated show. Looney Tunes A famous funny cartoon character.