你特么就是个逗比
[nĭ tè me jiù shì gè dòu bĭ]
A rather vulgar term used online or among friends. Here, '逗比' refers to someone silly or foolish, whereas '特么' is an expletive expressing irritation. Taken together, this user's chosen name calls out another as a jokester or clown around their friends, in somewhat rough terms.