Oh Com'on, you know it was funny!!!

My boyfriend Brian loves to sneak up on people and scare them. Something that drives me nuts when I am the target. But picture this, My son is in the kitchen eating a cookie. He just poured a glass of milk. Brian comes out of the powder room and see's my son at the counter with his back to Brian. Brian walks slowly up behind him, and just as he lifts the glass to take a drink, Brian pokes him in the back and yells "Rah!!" with that, my son jumps 10 feet into the air throwing the glass of ice cold milk right into his own face!!!!! He then throws the milk left in the glass acrossed the room at Brian. It was hysterical!!! Brian & I laughed for an 2 hours. Every time he would calm down, he would think about it and just laugh all over again. My son on the other hand didn't fin it as funny. Maybe a few years from now when he looks back on it he will laugh. But OMG, my sides were killing me from laughing! Do you have a funny story to tell? Please feel free to share. I have a million of them!