The other fun one to swap is 'more' with 'mroe', at school someone create a 'mroe' command that returned lines from the file by swapping every second and third line in the output, that lead to folks adding 'alias mroe more' in their .cshrc files :-)
I head that there is also one for service, it might be considered not political correct and offensive by some but it basically works when one misspells the word "restart" in `service XXXX retart`
It is the perfect prank for multi-users environments. I mean it is funny and not as bad as an alias to `rm -Rf`. It might make you win a one way trip to HHRR with no return tho.
