1 definition by fully (sic)
An expression of admiration or enthusiasm for a person, thing or action. It can stand alone as an exclamation but is frequently used as a modifier to qualify something as excellent. It is associated with Middle Eastern and Mediterranean Australian English, as explained on the Australian language blog Fully (sic).
"Fully sick, mate!" (stand-alone exclamation)
"Your car is fully sick, bro" (adjective)
"I will call on my fully sick boys" (modifier)
"Your car is fully sick, bro" (adjective)
"I will call on my fully sick boys" (modifier)
by fully (sic) September 1, 2010