Take a girl out for some spicy food (preferabily hot chicken wings or mexican food) and drink lots of beer and a good amount of tequila. Next, make sure you spend the night at her house. Then have intercourse with her and when you wake up in the morning and have to take a shit from all the alcohol and spicy food you take a shit in a paper bag and leave it on the pillow by her face. Flaming comes from the spice in the food and tequila, and doogan is just a funny word.

when you're hungover as shit after a spending a night drunk as a skunk