If you can provide more —such as whether this relates to a product, game, or technical term—I can help identify the correct information.
"Omek" is a clipped form of — which is a distorted, playful version of "ngomel" (to grumble or nag). However, in the context of this viral phrase, "omek" has shifted meaning through slang evolution. Some circles use "omek" as a crude reference to female genitalia, derived from a mispronunciation of "memek" (a very vulgar term for vagina). Others interpret it simply as a nonsense filler word. Given its adjacency to "tobrut," the vulgar interpretation is more likely intended.