You show your friend your dashing new wardrobe, only to be awarded with a 'YUCK!?' - Colin Baker enacts what should be done as follows:

Step 1 - Question their name
Step 2 - Accuse them of being evil
Step 3 - Accuse them of being an Alien SPY!
Step 4 - Strangle them
Step 5 - When they face you with the truth, shrug it off like nothing ever happened!