Merp

Merp (adjective/exclamation): A playful term used to describe someone or something behaving in an endearingly absentminded, clumsy, or humorous way. Often said with affection or mild exasperation, adding a lighthearted tone to the moment.

"Listen, merp, it's right here on the counter!" or, "Oh, merpo derpo, you're holding your phone upside down."