You know you've been watching too much Dr Who when...

When you get suspicious just because a shopkeeper gives you a load of freshly minted coins.
You find yourself not blinking when walking past a stone gargoyle.

When you look at shop girls as possible "companions" for the Doctor

When you walk down the street looking for any object that could potentially be a disguised TARDIS.

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You start saying obscure Doctor Who quotes to perfect strangers.

When the possibility arises of your girlfriend or wife meeting one or more of your past girlfriends, you think of it in terms of a multi-Doctor special.

When you have really bad man flu you say things like, "Is this death? I might regenerate. I don't know, it feels different this time." Or, while your wife is watching TV, you look at your hand and say, "It's starting."

You get excited by the sight of a portaloo on a central reservation. (This was many years ago. Mid 70s in fact.)

The sink needs plunging, and you volunteer for some reason.

You're in the supermarket, and a mother's young son and daughter are hitting each other. The mother says, "Do not fight in here!" and you imagine she's the Emperor Dalek in the final episode of Evil of the Daleks.

And the number one occasion when you know you've been watching too much Doctor Who:

Somebody says to you, "You watch too much Doctor Who!"

So this is permanence, love's shattered pride.
What once was innocence, turned on its side.

When you've been watching a movie for 25 minutes and then expect a cliffhanger ending.

When you've been to Paris and are disappointed that you've not experienced any cracks in time.

When you go to a department store to buy Power of the Daleks DVD and realise that the store for some reason hasn't displayed it in its own special unit when obviously it's the DVD event of the year.