I guess you get it from all sides, Caitlyn, in your family. People in all manner of occupations use a kind of shorthand talk, such as a "wee tickle". It works for them, but it's not easy for someone who's listening to it.
Beaver - are you saying that there have been ten 7700 squawks today? Obviously I'm no expert, but I would think that ten 7700s is possibly not very significant. But I'm only basing that on the number of aircraft in the sky at any one time, from looking at www.flightradar24.com
7700 is a general "emergency" code, which could mean anything as it's not very specific.
Also, I've looked up transponder codes on wikipedia, and an example is given there about being careful about changing squawk codes:
"Care must be taken not to squawk any emergency code during a code change. For example, when changing from 1200 to 6501 (an assigned ATC squawk), one might turn the second wheel to a 5 (thus 1500), and then rotate the first wheel backwards in the sequence 1-0-7-6 to get to 6. This would momentarily have the transponder squawking a hijack code (7500), which might lead to more attention than one desires."
That's written in a somewhat lighthearted fashion, but I wouldn't want to be an air traffic controller getting a 7500 squawk.
The world of aviation has expanded hugely, which means there are vastly more people travelling by air, and vastly more people working in the airline industry. Even though travelling by air is incredibly safe, there are millions of us who in some way or other feel connected, hence the need to know why.