Sand in my pants

Benji (my fav kid who has become very very cheeky) took off his pants today right in the middle of the playground, i went up to him and demanded to know what was he doing with his pants off!
Benji: Full sand, full sand..too heavy...
Me: Where's the sand and what is too heavy??
I picked up his pants and they were so so heavy...cos he has filled his pockets choke full of sand! That silly boy! Its amazing how he thinks of all these things to do! And of cos, all his cheeky friends followed suit!
He is always thinking of reasons for everything he doesn't want to do. One that cracks me up is when his parents have to put sunscreen on Benji...he is always saying.."too cold, too cold" He claims that the sunscreen is too cold and he hates it! His mum says that he has an excuse for everything and sometimes the excuse makes sense!
I wonder what excuse he had for wearing his underwear on top of his shorts today!