The image caption says it all

Holy man on his TVS 50 speeding down the highway

Probably the wife and the mother-in-law…. 😉  Two by one is a play on a a regular Indian expression, One by Two, where we love to share with our friends, relatives and companions.  One by Two literally means something shared fifty-fifty.  So if you happen to step into an eatery and ask for a coffee one-by-two, the waiter will bring you one coffee and an empty cup so you can share it.  This is India Only!

This picture may not have been taken in India, the young man looks  like he is of African origin, however, such a scene would not be out of context in India.