fellow who perenially seems to do and talk rubbish, or doesn't stick to his word
Ramesh: Arre woh Himesh phir baat pe kalti kha gaya, uske boss ko kuch sunaya bhi nahin
Suresh: Arre woh gelchoda hai, usse kuch nahin hona
R: Arrey that Himesh is again running his mouth off! He didn't tell his boss much.
S: Arrey that fellow's a gelchoda -- nothing will happen.