There's a geezer in my bathroom...

...so there is a geezer in every bathroom... You can even find geezers in kitchens!!
...the funny thing is that you have to turn it on to get it to work!

Let's keep it clean people!

Ok so geezers are not old men. They are small hot water tanks that are installed wherever you would require hot water, like in the bathroom and kitchen. You have to turn them on for them to heat the water, otherwise you are stuck with cold water only.