The main IRC channel #linuxmint.com is dedicated to Linux and Linux Mint topics only. It is a support channel which intends to be open to all (children included) and dedicated to help users with the questions they may have.
For off-topic talks and fun conversations another channel was created called #mintcafe.
People are expected to use #mintcafe for all off-topic talks especially when talking about topics which could offend or shock other users.
Enjoy the IRC and please make sure to use #mintcafe for off-topic subjects.