Ollie does most of these things too.
If we are sitting in the chair, he will back up onto our feet with is back against your legs and demand a fuss. With my OH he insists on getting on his lap with the chair in recline position the times they have both collapsed on the floor.
He also nudges with his nose if wants attention it might be your hands and if you have your back to him its your bottom he nipped my OH's last night for attention. I love the funny ways they have.