Conversion with my three and a half year old called Ptol:
Ptol: What you doing Daddy?
Daddy: I'm packing away my tanks.
Daddy: We need to tidy up because we're trying to sell the house and I don't play with them anymore.
Ptol: [pause for thought] I like your tanks Daddy.
Daddy: I know Ptolemy, and when you're bigger we'll get them out and play them together, 'cause you're a little bit too little at the moment.
Ptol: Yeah ... I like playing with your tanks...
Ptol: When I bigger we can play with your tanks.
Daddy: Uh-huh. When you get to eight?
Ptol: When I big, I play tanks.
EBAY - you lose.