T-shirt sizing

< Getting the job done
 * See also: Scrum poker

Introduction
In scrum you play planning poker with the whole team. If for some reason this is not possible. At least t-shirt size the backlog.

For example:
 * M: 2 hours building, 1 hours testing
 * L: 8 hours building, 4 hours testing
 * XL: 16 hour building, 8 hours testing