My son thinks I am a bed

Yes, that what Cole has thinks all evening, you see, I am in bed with the laptop watching some shows and doing some bloggy time, and my legs are hanging to the wall, well this kid is just laying on top of my legs,
he start swinging in them and jumping side to side in them, and people my 4 year old look like he is 6. As much I love him, he already have me in pain, I keep asking him to stop but I guess he doesn't care what mom is saying. I dont know how long I can take it.