I know Ataru deserves a lot of blame but most of the time Jariten goes overboard with his ridiculous revenge plans. That smack from Lum was well deserved.
Huh. This chapter was pretty different in the anime. Very different I'd say, although the setup and the premise were pretty similar. Episode 139 was pretty much a parody of Texas Chainsaw Massacre or some other horror movie. It was fun to watch.