While on maximum allowable dosage of your preferred brand ED medication, dry and powder your erect penis. Just before receiving felatio, apply a light coat of Pepto Bismol to said penis so that your dick resembles the look, smell, flavor and texture of a large piece of 80's style rock-hard Bazooka bubble gum.
My GF complained about the smell while giving head, so I slipped her the Bethesda Bougie Bazooka.