marrying above what you deserve.
The dude way overmarried. She's a 9 or 10 in all important categories and he's a 4 to 5 at best. Lucky bastard.
Thoroughly renouncing one's singleness and sense of fun and liveliness upon getting married, almost to the point of parody. Usually involves not making any plans for a weekend other than housework, yardwork, or schlepping kids to random events like soccer. See also: pussy whipped.
He is so overmarried, the most exciting part of his weekend is shopping at Costco on a Friday night instead of blowing it off and going to a titty bar.