When I was in Singapore last year I stayed in Little India. I noticed there that Indian men hold each others hand or hug each other whilst walking around. I thought this might have been a phenomenom unique to Singapore. This appears to be an Indian custom though as the guys in Mumbai do it as well. They usually hold hands with two or three fingers, or one guy will put his arm around the other. It seems that it is also acceptable for the hugger to twiddle with the huggees ear as well.
[Indian friends]
[Indian Boys Holding Hands]