I've still yet to figure out how to engage (or disengage may be the mire appropriate term).

These manifest themselves in one of two ways:

A. bragging contests, "I did this, that, and that, what about you Kittenswithwhiskers", then i have to flaunt my sucess while pointing out their shortcomings and it turns into a real shit show.

B. Bro, arm wrestle/fight/grapple me (I'm a fairly big guy), while i have nothing against this, i don't like doing it in public for the sake of my/their ego.

How do i respond to them?