Good day, Mr. Catch-Phrase. I invite you to leave.

In My Humble Opinion
61

X-treme

In the words of John Stewert: “If you’re wondering what could be so ‘extreme’ about Mickey’s X-treme Cooler…keep in mind, the ‘extreme’ is spelled X-dash-treme.”

62

An earlier thread on this subject:

http://boards.straightdope.com/sdmb/showthread.php?threadid=16754