Adults only joke

[elty001]

One night little Billy was awoken by some strange noises coming from his mum and dads bedroom.
he walked into their bedroom to find his Mum bouncing up and down like a cow girl on his dad.
"mum!!what are you doing?" he shouted.
Quick thinking mum replied"You know how your Dad has got a fat belly,well i'm jumping on it trying to flatten it"
"You're wasting your time doing that" he replied
"why is that?"Asked his mum.
"It's because every time you go shopping the woman from next door comes round,gets down on her knees and blows it back up again"