Irony

[the real unknown]

From TRU dictionary:

n.
1. A sort of humor, ridicule, or light sarcasm.
2. A Java programmer lecturing how to write efficient code to a C programmer.

[the real unknown]

#2 actually happened to me couples of days ago. I almost spitted a mouthful of coffee on hearing that. Geez...

These new age Java programmers don't even know how a computer actually works.