Being British, I can't tell you enough how fucking rude and obnoxious it is to do this in the first place to the royal guard. For Americans to understand this is the equivalent of dicking around in front of a soldier who's guarding your memorials and is on patrol, don't do it. The royal guard are made up of veterans as well and they don't take fucking around lightly, a lot of them are carrying real rifles with ammunition, it's amazing how many tourists still don't respect this.
Being British, I can't tell you enough how fucking rude and obnoxious it is to do this in the first place to the royal guard. For Americans to understand this is the equivalent of dicking around in front of a soldier who's guarding your memorials and is on patrol, don't do it. The royal guard are made up of veterans as well and they don't take fucking around lightly, a lot of them are carrying real rifles with ammunition, it's amazing how many tourists still don't respect this.