Drinks, Drugs, using Cell Phones, Smoking, Eating .... all can cause dangers & should never be indulged whilst driving, riding a bike or even a bicycle! :-)
Full sex while driving would be dangerous in every sense & doubt it would be as enjoyable as parking up first! BJ's would be nice, but too distracting, while the driver needs both hands freely available, especially if a stick-shifter! :-)
I have no patience for that....
Some people do not even realise that they are legally impaired. If you have been drinking heavily the night before, you can still be impaired the next morning. Your BAC is what will get you convicted, not how you feel at the time.
It makes no sense, don't do it. Take it from me, a two time loser.
My guess is that anyone who "does drink and drive" won't answer honestly.