Trouble with aircrew crewroom microwaves and freezers is that the unentitled Untermensch think that they can help themselves after hours. There are some ways to stop this:
1. Thaw out a frozen in-flight chicken or beef curry.
2. Insert a Brillo pad amongst said curry, ensuring that it remains below the level of the curry.
3. Refreeze and replace in crewroom fridge at gozome time.
Thieving ground crew oiks, not entitled to master race frozen meals, will probably attempt to steal and cook same whilst skulking off during night 'UTRF'/'NFF' shift. The effect of microwaving a Brillo pad is somewhat spectacular...allegedly.
If all the above fails, try further rather more nuclear options to stop the thieving swine pinching the rations:
1. Thaw, lace with salt and hot Jamaican sauce, refreeze.
2. Thaw, lace with Epsom Salts and Exlax, refreeze.
3. Freeze a dog turd. Pour thawed curry carefully over, refreeze.
4. All of the above.
But first put a notice on the freezer to remind folk that the rations are aircrew only - in case of QRA call-out...
And make sure you know which one has been 'treated'!