Here are nicknames that have been gegeven to meer than one person :)
Thanks, Enjoy, commentaar :)

Chandler & Joey = Braclet Buddies
Chandler & Joey = Lazy Boys

Chandler & Joey = Fancy Lads
Chandler & Joey = Roomies
Chandler & Joey = J Man and Channy's

Chandler & Ross = Weenies

Joey, Rachel & Phoebe = Children

Chandler & Monica = Love Birds
Chandler & Monica = Blahh
Chandler & Monica = The Bings

Ross & Joey = Ball Boys
Ross & Joey = The New Joey and Chandler

Ross & Rachel = Dr. and Mrs. Geller
Ross & Rachel = The Geller's
Ross & Rachel = Lobsters

Phoebe & Rachel = Losers

Ross, Joey & Chandler = The Three Hockeyteers
Ross, Joey & Chandler = Hairy Backed Marries

Joey, Rachel, Phoebe & Ross = Little Elves

Monica, Rachel & Joey = Kids