This sexual manoeuvre requires one male receiving oral gratification from one (or more) female's. When the male in question ejaculates in the females throat, the female will the close her mouth and squirt out of her nose. Thus causing plenty of spaff to speed out of her nasal cavity, causing the Double Barrel Cum Gun effect that is desired.
Dave: What did you get up to last night then?
Matthew: After I finished I made my missus Double Barrel Cum Gun.
Dave: Oh respect.
Matthew: After I finished I made my missus Double Barrel Cum Gun.
Dave: Oh respect.
by Greatest cum master of Devon May 15, 2021
Get the Double Barrel Cum Gunmug. by Dr.H.L.69 August 13, 2021
Get the Double Gunningmug.