The act of walking and farting at the same time. This act is done either because one is in a rush to get to one's destination and does not have time to stop and fart; or if the fart is silent, it is done so one can fart relatively anonymously without others knowing the origin of the fart since by the time others smell the fart, the person farting has walked on.
This is the verb form; the noun form is Farlk, which is simply a fart that is done while the farter is walking.
I was late for my plane so I was falking between gate A and gate C.
I knew my farts were silent and did not want to be accused of farting so I was farlking so no one would know I was the person causing the incredible bad smells.