whajya happen?

the combination of the phrases: "what did you just do?" and "what just happened?"

On the subway I sat next to a man who erupted into sneezing, followed by coughing and passing gas simultaneously. My response: whajya happen?

The other day in the break room, Bob laughed so hard that coffee spewed out of his nostrils. Whajya happen?

Gas in the morning: 2.94
Gas in the afternoon: 3.26
Whajya happen?