does it look like a word play? 1. えっくすせん - X ray and 2. いいくそせん I'm sorry I don't want to abuse anyone just interesting if 2. resembles 1. or not at all. This is to be a joke in a manga like way when two characters fight with eye beams. They cry the name of eye beam techniques they are about to use. Imagine one of opponents is a bad japanese speaker.