Popularised in the mid-1990s by television commercials for soft drink Tango, a British equivilent of Fanta. The original commercials featured an obese man painted orange who would tap Tango drinkers on the shoulders as they sipped the beverage. As they turned around in surprise he would slap them in the face simultaneously with both hands then disappear. The narrator woudl then proclaimed "you know when you've been tangoed!". The commercial was such a success that they continued with a host of other characters, including a Napoleon-like figure with a wobbly orange hand who would wobble it in people's faces before the catch phrase. These commercials helped make Tango Europe's number one orange soda during the 1990s. The term 'tangoed' is now used to mean shocked or insulted.
"You know when you've been Tangoed!"