Sleeping In Speedos

[Torchwatch]

In response to Byron's point about wearing tight clothing and loss of male fertility.
Well fitting Speedos hold you firmly in place through the stretch in the material. Non stretch fabrics such as denim Close fitting jeans held in place with a belt and worn for hours in an overheated lorry cab will ruin your chances of being a father.
Cycling for long periods without the padding provided by cycle shorts also reduces male fertility. So it is best to ride in your Lycra.