No problem.

Rules of Golf Definitions:

Stroke

intention of striking at and moving the ball.

@penfold -

Did somebody hit you with a penalty for doing this?

doc,

no mate. This was brought up in a discussion on tuesday when i was playing in a texas scramble. One of our team (a lad off 3) asked if i knew it was against the rules for a player to make a practice swing in the bunker ? He'd had a debate about this on his own course where the other guy had bizaarrely claimed it was against the rules for amateurs but not pros.