I was playing on the Xbox 360 version of TF2, and i found this server that had some weird mods going on
There was an enemy Demoman (Who was on our team, but the scoreboard said he was on Red), he kept sticky bombing one of our spawns, several enemies kept spawning in the Blu spawn room in the barn (The place that has the ramps leading down to the Intel room), but they were colored Blu, even though they were on Red team, so as a Heavy Weapons Guy, i fired at any enemy or ally that came at me, there was also low gravity
It was weird, you had to be there :S