From the May 1950 issue of Fantastic Adventures magazine.
It's a visual pun, see, because "Va-va-va-VOOM!" translates in the Martian language to "Ouch, my goddamn optic nerves are distended!"
(Boost if you agree we need more xenolinguistic humor in the fediverse)
https://archive.org/details/Fantastic_Adventures_v12n05_1950-05_cape1736/page/n5/mode/1up
