Egoambulistic

A composite construction, denoting an attitude often adopted during arguments. It's designed as an emotional blackmail. Lit. "I walk"

Also, Egoambulists can be solo hikers.

It was raining outside and John asked Mary if she could drive him to the shop. She claimed to be busy, whereupon he responded Egoambulistically... knowing full well that she would feel guilty if he got soaked.