Oh no! Please protect me from the explosive power of yogurt!!

The TSA has not defined what they consider a liquid. They do not follow any physical or chemical definition. They just decide at whim.

A few wacky examples: peanut butter alone is a liquid, but on bread it is not. Pie is not a liquid, but ready made pie filling is. Gel filled inserts over boobs are OK, but gel filled inserts in your carry on are not. Grapes are not liquid. Liquid filled chocolates are not liquid. Snow globes are. In fact, snow globes are a no-no no matter what their size is, even under 100 ml and in the baggie (why?? someone plotting with snow globes???). The insoles of my super comfy travel shoes (which have gel in them, I found out that day) are not OK, unless a supervisor is convinced, and allows them as long as they can fit in the Kippy baggie.

Here is an important unanswered question: after how many days of aging does brie turn from a solid to a liquid per TSA rules? I would really like to know, since I like brie, and it makes a delicious snack on those long food-deprived flights...