To pass out from heavily drinking, it can also mean sleeping in general but usually refered to when passing out while drinking. (You're toe's are facing up when you pass out on your back is the origin)
Mario got so drunk that he was toe's up by midnight.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug