So I was in my kitchen with my DH doing our VAT return. He was sat at the table and I was perched on the edge of the table with the lap-top on my knee - so technically I was sitting on the table.
My just 7 year old DD walks into the kitchen to get a drink. She helps herself then I say to her "right, back to bed now please"
She turns around and says -
"Okay mum, I'm going, but by the way "tables are for glasses, not for arses" 
Would you have laughed like me?? In my defense we did have a quiet word about 'naughty' words afterwards.