Cell phones and toilet-related accidents

Via Antony Townsend's mailing list, this improbable fact:

More and more mobile phones are turning up in the sewage system of the Helsinki Metropolitan area, according to Helsinki Water, which serves over one million households. It's not known if the phones are purposely or accidentally disposed of, but with 4.8m mobile users in Finland, it's reasonable to expect a certain number of toilet-related mobile incidents.

A possible reason is that "Most mobiles apparently come a cropper as a result of tight jeans.".