Knock Knock Knock

From: 
Story type: Ghost
Location: front door
Source: Form Submission

One afternoon in Nov. of 2002, my son was playing nintendo with some friends at his b-day party. The sound was on quite high. As they were shouting; go there, no, do this , press that, ahh. I heard 3 knocks at the front door. I said did you hear that? All said no, then just as quickly, 3 more distinct knocks were heard! When I opened the door not a person in sight. We later learned that my sons grandfather had passed away at the exact same time as the knocks were heard.