Definitions by Gashead26

Periscoping 

While performing submarining,one takes the legs of one's partner and splays them out at 180 degrees and holds them with the hands in order to get a better thrust and ease penetration of the head.

"So while I was submarining your mom,we spread her out wide and then I was periscoping her properly"

Periscoping by Gashead26 August 7, 2012