SUBREDDIT: r/AskReddit
TITLE: People of Reddit, what is the biggest lie you ever tell, where obvioulsy you were sure not get caught but were you failed miserably?
POST: Mine is like that:
I was 9 years old and my mother note that I always have some candies. Everyday. She check in my little piggybank and of course they were less cash than what was supposed to be there. She punish me.
Pass a fews days, she hear a funny sound coming from me. She ask me if I take some loonies again. I said no and showed her inside my pockets. Nothing.
I continue to do my thing before school but my mother hear again a sound from me. She's more insistant and ask a few more questions. I start to be very nervous. I fidget. That's when my mother realise where the sound was from.
My panties. I had put the change inside my panties. 
I didn't receive cash for at least one year after that and everyone continue to laugh at me.
TL;DR: 
Put some change inside my panties to buy candies. Lie to mom. Was caught. 21 years later everyone continue to laugh at me and tell every new person that have the bad luck to know my family.