That’s some good maladicta from Minami-papa, there. I think it qualifies as quimps rather than grawlixes.

(Sorry, on a bit of a Mort Walker kick. To explain, the cartoonist best known for Beetle Bailey wrote a book naming and explaining the bits of visual shorthand used in American comic strips — many of which are pervasive throughout comics and manga. These are his terms for iconographic, self-censored cursing; the sweatdrops everybody has in the same panel are plewds. See Quimps, Plewds, and Grawlixes for details and other useful terms.)