Pour the peach schnapps into a shot glass. Slowly pour the Irish cream on top of the peach schnapps using the layering technique described in the Swampy Floor cocktail recipe. Next, you’ll need either a straw, turkey baster, or something similar so you can collect the grenadine and control how many drops you’re adding to the cocktail. Slowly drip the grenadine on top of the Irish cream in one spot until you start seeing the Irish cream sinking through the peach schnapps. Repeat that as many times as you would like to get your desired look. Remember to move your straw to different spots to make many different strings of Irish cream.