Here's a bot taunt plugin for you. A bot will have a percentage chance to perform an all class taunt whenever they kill another player. Default chance is 5 percent. You can change the percentage chance with a console variable. You can edit the plugin if you decide to change the taunts performed. I labeled the taunt names in the code. There are currently 12 different taunts possible in the code with the Laugh taunt 4 times more likely than others.
Plugin credit: Most of the code for this plugin comes from FlaminSarge's excellent [TF2] Taunt 'em plugin which allows human players to taunt.
1. Place tf2.tauntem.txt in your /addons/sourcemod/gamedata/ folder.
2. Place bot_taunt.smx in your /addons/sourcemod/plugins/ folder.
3. Change map.
The default percentage chance that a bot will taunt on kill is 5%. You can change the value from a low of zero percent (0) to a high of 100 percent (100). To change it to something like 60% chance to taunt type this in at the server console:
If you find a percentage chance you like you can always add that command to your server.cfg file to ensure it is always set the way you want.