Robertson goodbye
when you are at a social function with a mixed company of friends and strangers and when it comes time for you to leave, you take a drink from a strangers glass right before leaving. Preferably this will happen as you are saying goodbye to everyone and the attention is on you.
I was down at the bar when I noticed how late it was, so rushed out of the bar and accidentally Robertson goodbye-ed. So today I'm pretty sick. :/