Replying to Well kiddos?

At work we recently recieved some members of the minority backround and I always try to direct them to do necessary tasks...

My greatest concern is that I don't understand thier contemporary "slang" and wondering if any of you could help me out?

One of my co workers said the new lunchroom was "the bomb" and I immediatly panicked internaly, I thought for sure there was a leak in the industrial stoves gas-line. After asking them if we needed to evacuate they laughed at me like I was an infant.
I better catch up on these crazy silly synonyms befor I have a heart attack ! Can anyone help : )