Help!

"Mum! Help! I'm stuck!" I heard as I tried to settle the little ones down for a nap after lunch. I went to see what the matter was and found this. He'd clipped himself into one of their booster seats for the dining table and couldn't unfasten it! He'd walked from there to the stairs and managed to get up a couple of steps by the time I got to him. He wasn't impressed at me taking his picture but it was too good a blipertunity.