Pisscuse

The often lame explaination that you use when someone identifies you as talking to them on your mobile phone whilst peeing.

Caller; So, if we lower the price by around a third we can get to .......
Customer; Sorry, but why is your voice so echoey? And what's that splashing sound?
Caller; Oh ...... I'm calling from a carpark ..... and that's a fountain in the background ... of the carpark
Customer; Sounds like a pisscuse to me; I'm now going to cancel your multi million dollar order