does anyone have any stories of times that they were never found out, or never got caught

the 2 that come to mind straight away:

pranking my sister in to thinking she'd got an audition for the X-factor (she never found out it was actually me who set the whole thing up), then returning to a website 3 years after I'd been banned (because I heard it was closing), andn o one suspected a thing (my cover story was good)