wallop is : click on user name and slap them with a trout or whatever
bash is : if there is a sequence of shouts that seem funny together, you can check the checkboxes and hit the 'Bash' button. That saves it as a post to a special 'Bash forum' for time immemorial.
examples of bash are:
and
and
and
and
and
and
The idea came from the website,
http://bash.org, where IRC and IM conversation snippets are saved to be rated and read for future..