Oh Gill, sorry that did make me giggle!
But only as I totally know where you're coming from, when we're sitting on the sofa they don't want to know us, but up on the computer, suddenly laps are really interesting! Poot has done this to be lots of times now, but when dinner is already in the oven and about to burn, I had to be a nasty meowmy and get him off
He has a sulk on all night (until I shook the Temptations box, then all was forgiven)