what happens if you eat meat that has been defrosted and then refrozen, and then de-frosted again?

google

Well, I made that mistake a couple times without any horrible effects. (I think). But the google link above has better advice than that.

Salmonella. Makes you into a contortionist, trying to cope with diarrhea and vomiting simultaneously.

i had some uncooked chicken thawed at room temperature a few days ago, changed my mind about cooking and put it back in the freezer…i thawed the chicken today in a microwave, cooked, and ate it for dinner….i’ve been feeling a little nauseous for 2 hours now…i never knew this was bad practice!!

@ciku: Live and learn, I hope. But, as the Gastroenterologists are so fond of saying, thinking that it is funny, “This, too, shall pass.”

Hope you are feeling better. The body will purge itself (see @gcross above).