Much like a regular knocky, only you use specifically your erect penis for the knockout blow by slapping it across the receiver's jaw.
"Danny, mate, a jist gave some bird a knocky!"
"Aw fair do's brother, ah jist gave mine's a Glaswegian knocky!"
"Aw fair do's brother, ah jist gave mine's a Glaswegian knocky!"
by Yerboidanny December 17, 2018