Being sent outside from a bar or club by bouncers, to cool down for a few minutes. similar to recieving a Yellow card in Rugby where a player has to sit in the sin bin for 10minutes.
Ben totally got yellow carded last night at nubar, he sat outside for half an hour.
May 11, 2012 Urban Word of the Day
When a person does not wash their hands after urinating they receive a yellow card. Similar to a warning in sports.
Brent got yellow carded because he is a disgusting douche bag and didn't wash after whizzing.