noun
Internet slang and jocular term derived from splitting 馬鹿 (ばか, 'fool') into its kanji components 馬 (うま) and 鹿 (しか). Used playfully to call someone an idiot.
See also: 馬鹿
あいつ、またやらかしたのか。本当にうましかだな。
Did he mess up again? He's such an idiot.
ネットで「うましか」って書いてあるのを見て、最初は意味がわからなかった。
When I first saw 'umashika' written online, I didn't understand what it meant.