Q

Some questions that have been bothring me today:

1. With todays technology, why can't someone invent jeans that don't eventually bag round the arse?
2. Why is there no backspace on the telephone so you don't have to re-type the whole number when you go wrong?
3. How do homeless people get fat?
4. How does sweetcorn reform inside your body and come out whole after being chewed up in your mouth when you eat it?