Britney SpearsShe was only toilet trained, oh, 25 years ago...

But Britney Spears has still not learnt to tap into her bladder.

Much to her infinite embarassment.

The singer was caught short (numbers one or two, we are not clear on) while out and about in Calabasas, California.

So she had to make an emergency stop at a petrol station, and was forced to use a public lav and everything.Brit in 2004

There was no loo seat made of gold or small slave to pass her the quilted loo roll.

This, however, isn't the first instance in which the superstar has been forced to park her butt where Joanna Public has gone before her.

Back in 2004, Brit also failed to listen to her waste system, and had to make a pit stop on the way home from dinner with then hubby Kevin Federline.

As you can see from our picture, she looks like her hands might fall off if she's forced to touch the handle.

To quote the Jason Lee classic Mallrats, Brit has the bladder of an infant.

To which she should reply "You're hung like one."