No more Monkeys Jumping on the BED!

So my son has only a top bunk of a futon bunk bed set. The futon was removed because it was breaking.
He won't sleep on the top bunk. Yesterday I went to the D.I. and picked up a used wooden frame bed for 20$. It needed a few minor things that were easily done. Hence getting my son a bed a little closer to the floor.
Right?

So he's already been jumping on the bed even though we warned him not to. He beat his little head on that window sill you see behind him. We haven't had a chance to move the furniture around. So once again I got mad at him (after making sure his brains were still intact) and warned him  he would bounce out that window and die if he kept it up..

Like Father - Like Son

I was kicking back on my bed with my other half.
 When my son jumps up on the bed buries his head in my chest, starts shaking his head between my boobs and makes noise while he does this (sorta like when you do it on your lips with your finger). 
I start laughing and asked my other half if he saw that. 
He said "no" and I explained what he had done.
 He just starts laughing and all I could think to say was ... "like father like son"