VERB:
To listen to one's stereo while simultaneously lying on the couch watching television with the sound turned down.
This is based on the fact that those who simply lie on the couch watching TV are couch potatoes, therefore they must be "baking." It's even worse if they're doing two worthless things simultaneously: hence, they are "double baking."
It follows that they would be double baked couch potatoes for those who care.
"I was so bored that I got on the couch and spent the evening double baking with 'Seinfeld' and 'Exile on Main Street.'"
"Are you just gonna lie there double baking, or are you goin' with me to Joey's?"
When you wipe the little speck of piss/cum on your dick with toilet paper, then proceed to wipe your ass with the same piece of toilet paper, or vice versa. Consumption is optional.
Desperate virgin willing to have sex with girl of dreams while getting anal rammed by girls boyfriend. All Simultaneous. Desperate Virgin enjoys it all.
Warren finally lost his virginity when he did a double whammy with Marianne and Trey.