Story of a name

If you have come through gutka.org, probably you have some idea about the name. But even then, I am sure you would be interested to know its etymology.
So what happened was this.

Three guys who went by the aliases of mandu, dube and sudhanshu were coming back from the heavenly trip of Himachal, completely stoned. Bored by the non-prolific atmosphere of the Shatabdi compartment, they came out in the lobby and started to discuss.. something. No one knows how, the discussion turned to one where they had to find the name for the new ngo two of them were trying to set up. It was then, when through divine intervention, and through his -5.5D specs, dube found that the railway ministry was not so apt in its promises of keeping the Shatabdis clean. He had discovered a packet of “Sir” beside the basin. Now since he was dube, he had to shout “gutka” and since the other one was sudhanshu, he had to give a derogatory look with a why imprinted on the face. As usual, the reply was “what about gutka as the name?”. The third one, not because he was mandu, but because he was stoned, had to say, “its a cool name, but does not relate to the ngo”.
So its like

dube (screams): gutka.
sudhanshu gives the usual enthu killer look.

mandu: han be gutka. awesome hai. maja aa gaya.
sudhanshu gives the usual enthu killer look.
dube gives the usual cunning smily look.

mandu gives the usual “oh my god! just realized” look.
mandu: abe but relate nahi hota.

sudhanshu gives the unusual cunning smily look.
and with the sole aim of proving his excellence over the others in hindi language, goes
sudhanshu: nahi hot to sakta hai. gutka matlab “gut ka” matlab “of a group”.
“oh my god! just realized”

all give the cunning smily look.

door opens (=curtain drops). they go back to their seats and argue on the hottest babe in the compartment. mandu sleeps. dube sleeps. sudhanshu writes the story.