Noun. An office space completely dominated by testosterone. Women are relegated solely to ministerial positions and are required to wear skirts while the men in the office close deals and compare dick sizes.
The inflation of a name used in your vocabulary when talking; usually at the beginning stages of dating someone. Mentionitis is when you can't stop mentioning someone.
H: "These are great cookies"
S: "Matt likes cookies"
H: "So I was looking at something online..."
S: "I got a cool link from Matt, lets check it out."
H: "so..."
S: "Matt blah blah blah Matt Matt Matt"
H: "Whoa you have a strong case of mentionitis"