Hmm never heard of such game to make assumptions…

This guy lack imagination

how: sitting next to your cousin so you can see his cards and across from your brother and tapping your left knee so that he knows what numbers to ask for.

why: you like your brother more and want to pick on your cousin. orrr you want to foster that fraternal connection.

thats the imaginary situation your uncle could have been yelling at, not you.

people are nuts.