I can't be caught by that kind of shrimp ~degeso! This is a direct parody of the 2ch AA character "Kuma" (bear). Trolling is called fishing in Japanese BBS slang, and Kuma is representative of a forumgoer. He often considers taking the bait, and usually does so. He is then dragged around by the corner of his mouth yelling "I was seriously caught by this kind of bait!? ~kuma". This is a parody of one of the variations on the AA.