[quote=@Rare]
<Snipped quote by LetsFly>

Or they will run over the whole family at the park and ruin the grass!

My turn:
 
"Break a leg!"
[/quote]

*breaks leg. in half. and uses detached half to beat you to death with your own leg.* 

[b]"Piece of cake"[/b] (and be more creative than Portal ;) )