Oh, and the t-shirt is explained here.
Suggestions so far:
“If you thought the latency from yelling at disks was bad, wait until you see what happens when I take this to them”
“Suddenly, @brendangregg just got an uncontrollable urge to scream at the Oracle banner.”
@brendangregg “nth-level hardware / software ORA-fice engineering, a la Brendan ‘Speak softly and carry a large n-zooka’ Gregg”