IRC has a certain reputation for being full of pranksters and troublemakers. Even though one is to a certain extent shielded from bad behavior by the text-only mode of communication, users can still be tricked into sending scripted commands to their own clients - for example, these users were tricked en masse into sending a quit command:

#1993
[Kryton]: /exit and /quit jumps off a cliff, /exit is a feather and /quit is a brick, who will hit the floor first?
Quit: (Prinze) (tullball@sondre3.users.quakenet.org) (Signed off)
Quit: (iAo|LexoN) (~lexon89@ti121210a080-0727.bb.online.no) (Signed off)
Quit: (PFS-EnZymeR) (nn@eXoTic84model.users.quakenet.org) (Signed off)
Quit: ([TS]-miiilo) (m@miiilo.users.quakenet.org) (Read error: Connection reset by peer)
Quit: (MacGyver^^) (~topfragge@Fisher`s-WembY.users.quakenet.org) (Read error: EOF from client)
[… and 9 others quit …]
Join: ([TS]-miiilo) (m@miiilo.users.quakenet.org)
Mode: ([TS]-miiilo) sets (+b *!KyleSumner@[snout]kryton.users.quakenet.org)
Kick: (Kryton) was kicked by ([TS]-miiilo) (DONT POST ANYTHING LIKE THAT AGAIN! :banned)

Of course, users don’t have to choose to quit a channel - they can be kicked out of channels either by a moderator or when a script detects violation of a policy, such as profanity, or forbidden expressive actions (e.g. hugging). While putting on a performance of a terrorism themed first-person shooter game (Counter-Strike), one member simulated a beeping bomb… and was automatically kicked from the channel for making repeating statements (often a sign irritating or abusive behavior). The kick was then folded back into the story - “the bomb has been defused.”

#3155
[NukNuk] lets play some css
[Qwertywasd] Ok
[Qwertywasd> lets
[Qwertywasd] Alright team lets move out!
[Qwertywasd] The Bomb Has Been Planted
[NukNuk] Fire in the hole!
[theGreenBunny] it all makes sense now
[Qwertywasd] Lets Go Go Go!
[b3nn1] Beep
[b3nn1] Beep
[NukNuk] beep
[Necro^Sick] Enemy Spotted!
[Qwertywasd] You Take The Point
[b3nn1] Beep *faster beep*
[b3nn1] Beep *faster beep*
[b3nn1] Beep *faster beep*
* Andrew sets mode: +b *!*@xdsl-213-168-110-71.netcologne.de
b3nn1 was kicked by Andrew (Repeating (3r in 10s), 15m tempban! <76>)
[Maxi^] The bomb has been defused
[Qwertywasd] lmfao
[Maxi^] Counter-terrorists win