I can't say I've never heard a few snide comments from the aggie stands directed at opposing fans, but it's usually precipitated by some azzhat opposing fans being a total jerk for a couple of quarters in the immediate vicinity.
We won a TON of games when I was in school in the later 90's, and I don't EVER remember anyone doggin or harrassing the losing team...though we were obliged to lay a beatdown on tu fans when they rushed the field in 95...
Memo to fans: When you're outnumbered 10-1 in the stands, and the game is very intense, and you win, it is NEVER a good idea to rush the opposing team's field and try to tear down goalpoasts they haven't even taken down themselves while simulaneously assaulting any opposing fans that happen to be in your way when the maddness ensues...remember, you still have to get out of the field once you get to it...
CU fans are pretty bad...techies can be pretty bad. Drunk tsips are pretty bad... other than that, I can't remember any really bad fans I ran into. Hell, even drunk-as-hell LSU fans were pretty cool when we beat them at Tiger stadium in '94. They were throwing beer bottles at everyone, not just the aggies..and more than a few of us got a congratulatory cold one...