House pound?

"I love you Dada" said the wee man this morning
"I love you more than a house pound" he continued
"A house pound?" I said "How much is a house pound?"
"About 99 pound" he replied
Then he paused, thought for a moment and corrected himself "Actually, it's a little less than that. Probably about 33 pound"
"Amazing.  So you love me more than yesterday?" I said cheerily
"Yes.  And now I love grandma 34 pounds. More than a house"