What the deuce?
"My young nephew emerged from his room where he had been watching TV. He positioned himself on the sofa next to his father and asked, "Dad, what is love and juice?" "Well son," replied his father, thinking looks like it's time to explain the birds and the bees, "when a man and a woman fall in love and want to spend the rest of their lives together they get married, sleep together and make love. The man's juice enters the lady's tummy and then, if all goes well, along comes a lovely baby, just as you did to your mummy and me." Because of the bewildered look on his son's face dad asked, "Er, what have you been watching?" Tennis, his son replied.
'Coal rollers' say it with smoke
In the US some people modify their cars to produce thick, black diesel smoke to protest/annoy cyclists and environmentalists. It's called "rolling coal". These drivers intentionally "roll coal" in the presence of hybrid vehicles (it is nicknamed "Prius repellent") to taunt their drivers, who are perceived as being environmentally motivated in their choice of vehicle. Coal rolling may also be directed at foreign cars, cyclists, protesters and pedestrians. (Via Wikipedia)