i told a fib

ok so my lil bro was annoying me today and i just couldn't take it anymore. he's always asking to borrow my stuff or playing with my toys without asking first, you know? so this morning when mom asked him if he took my favorite pencil sharpener from my room, i said nope because honestly i had put it in his toy box as a joke and didn't want to admit it. now he's all happy thinking its somewhere in there but im kinda worried he'll find out it was me putting it there in the first place... i dont think i should have done that, feels kind of mean when hes just being a kid and trying to be close with his big sis like me. lol but really, sometimes i wonder if i am too hard on him or if its normal for oldest siblings to mess around like this? im still thinking about it.