Idiotic or stupid. If someone is a rueb, or has been a rueb, they often feel stupid or embarassed after the fact. If you call someone a rueb you will often be disappointed in them, but at the same time will find their actions somewhat hilarious.
"You're a rueb"
"Dan is such a rueb"
"I can't believe Sam ruebbed the TV!"
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