A bit like "take off power!". I much preferred "power for takeoff", or a specific TIT or torque figure.
A bit off thread but I was never too happy with the standard takeoff brief part "Once attaining V1 we will continue and sort out any problems when airborne". My feeling was that if a catastrophic failure occurred involving structural damage just above V1, but before liftoff, I would rather go through the far hedge than fall out of the sky.