schlongbonking Share definition Flag V. The act of sword fighting (with another male of course) while both participants are ejaculating on one another's abdominal area Dude, Noel is such a faggot I caught him schlongbonking with Yousif in the boys changeroom today schlongbonking by penispumper5097 May 21, 2009 Get the schlongbonking mug.