I was teaching a spotter friend to fly in the 90s at Eastleigh and at hold Bravo for 20. We were cleared to line up after the landing xxx on short finals - whatever it was, it was obviously exotic to a spotter. Bob - sorry - this mate just said 'you have control, read that back will you, I've got to get this reg' - he then turned to a new page on his kneepad and started scribbling time date, etc.