Jaws
“This is my brother. My older siblings took him down to the lake at our old cabin. He’s only in about a foot of water, but after telling him what the sign said and putting the fear of Jaws in him, they left him hanging for a photo opp…my 81 year old mom still gets mad when she sees this and defends herself of any prior knowledge of them taking him out for this picture.”
(submitted by Dan)