boink /bɔɪŋk/noun 3verb 2forms 3 noun3 •(informal) Sexual intercourse.Max and Jane had a quick boink in the bathroom. •A sound of something hitting or bouncing off a surface, similar to plunk, but with more connotations of bounciness. •(slang) A real-world social gathering of computer users. verb2 •(informal) To have sexual intercourse (with); to bonk.Max was boinking Jane in the bathroom of the bar. •(informal) To hit or strike. formsboinked · boinking · boinks