I from the US, just learned about these today, and had a chuckle.
an essex girl was driving down the A13 when her car phone rang. it was her boyfriend, urgently warning her “treacle, i just heard on the news that theres a car going the wrong way on the A13. please be careful!” “its not just one car!” said the essex girl “theres hundreds of them!”
This sort of humor in general hasn’t aged well. I think this sort of thing is still funny when it’s a surprise, ie used sparingly.
One or two seems like the maximum. Otherwise you’re getting into dirty old man territory.