The act of attempting to make somebody believe something that is not true, done as a joke.(noun)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "leg-pulling" in a sentence
"Here's a Los Angeles Times slideshow to mark the moment – although sadly there is not 1,000 photos in the photo gallery.3.24pm: Speaking of jokes – the Republican party has been non-stop leg-pulling over the last few days."
"Yes, but it was a rather elegant and graceful bit of leg-pulling if one can in fact pull legs in such a manner."
"Fortunately I don't work in an environment that reads The Bookseller online or I suspect I would have been in for a fair old bit of leg-pulling about this byline,"