I grew up watching them with my dad, but I can't really stand watching games with him unless we're winning. I get pissed and scream at the players or the coaches on TV, or at the game just roll my eyes and look away, while he says "Relax, it's just a game."
He's enjoyed the full ride and so he can handle losing, and while I was present during the pre/early Snyder years, I didn't really pay attention/care until the mid-late 90's (until I was 10 or so) so I'm very spoiled and expect us to play good football. I'm used to watching us destroy superior 'talent' with better effort and better scheming/coaching. When we don't, I get really pissed. When we lose to teams with worse talent (See: Fresno, ku, Marshall, Purdue) I &@#%ing kill people.
To answer the question: At a huge watch party, anywhere but my house(I hate cleaning up) with a bunch of other K-state fans, a nice TV, comfortable couch/chairs, complete with nachos, brats, and beer. Maybe some poker leading up to the game. At a sports bar comes in a distant second.