Subtlety Is Not My Forté

My friends and family often tell me this, at first I did not believe them, as you do, but after some time I began to see their point and found it quite hilarious.

I'll tell you one of my escapades; It involved me and my friend walking down the street, we get to a sweet shop and decide to get something to drink, I was opening the door and saw someone I did not like, so I immediately shouted, "No!" and then shut the door and carried on walking down the street. My poor friend was so confused and I only wonder what every one in the shop were thinking.