What is a crowbar?
(BTW, there is no real wrong answer but the question to the answer was "What is a douche nozzle?")
This particular noble gas is particularly expensive, multi spectral, appearing cool white when ionized, and used in tubular glass envelopes called flashlamps or arc lamps operated in a pulsed or quasi-continuous maner (respectively).
"It's Tee-revor time!!!"--Trevor Phillips