Randome is a term used to describe the random appearance of manga-inspired or manga art that would show up as a result of an unrelated Google Images search. Say, for instance, you googled 'Team Fortress 2'. Team Fortress 2 is a Hat Simulator that has no basis or any relativity with Japanese art whatsoever. However, anime-inspired images of the characters appear regardless. Same goes for just about anything else, including a search of the word 'survivalist'.
While techically considered manga, 'randome' is the more accepted term because it is easier to say and it is derived from the words 'random' and 'anime'.
Looks pretty normal to me.
Scroll down to the beginning of page 3.
There you go. Randome!
Hence the "random" part of ranDOME.
"Bro I don't even know her name but she gave pretty good randome."
Jeff: god damn your so stupid how the hell do you spell random wrong you dumbass