Anything that is beffiting the traditional sense of masculinty, toughness, or persistance.

From the Seattle Seahawks quarterback Matt Hasselbeck. Especially his repersentation in the Playstation 2 game NFL Street where his ability to establish physical dominance is unmatched.

Also spelled hasselback

A person, usually a Seattle Seahawks fan, that continues to defend the play of NFL quarterback Matt Hasselbeck despite the mountain of evidence that proves Hasselbeck to be a washed-up stiff.

Any act of masculinity that would leave men of ordinary testicular size quivering in fear like a little Chambers.

Full name: Xaverian Brothers High School. Located in Westwood, MA. Frequently voted by US News and Report as one of the Nation's top high schools. Also home to one of the most well-respected football programs in New England. Currently has the most NFL players in the league than any other Massachusetts team (Matt Hasselbeck, Tim Hasselbeck and Greg Comella.)

Definitions:

1-Someone who believes that NFC Championships are just as valuable as Superbowl wins.
2-Someone who explains losses by claiming that their team has to play the refs in addition to the opposing team.
3-Someone from Kent who when given the team color choices of blue, white, and neon green, chooses to wear the neon green...Also, likely overweight.
4-Someone who wants the ball and is going to score.
5-Someone who believes that the reason the Seahawks weren't good in 2008, 2009, 2010, and 2011 is because Matt Hasselbeck got hurt.
6-Someone who listens to, respects, and believes Softy Mahler is logical.
7-Someone who doesn't care about statistics.
8-Someone who gets more excited about false starts than touchdowns.
9-Someone who loses.
10-Someone who doesn't think there's any reason why the Seahawks don't go 14-2 this season.
11-Someone who has a selective memory that spans the years 2003-2007.
12-Someone who thinks they came up with the term "12th man" despite Texas A&M coining the term 55 years before Seattle had a football team.
13-Someone who calls Shaun Alexander a bum while wearing a #37 jersey.
14-Someone who refers to their players strictly by their first names.

ex)Matthew, Lofa, Julius...

New York Football Team, with poor history, consisting of mostly Mexicans, potheads, dumb asses, and overrated players. They have a fat coach who is morally vacuous, has a passionate foot fetish, and flaps his gums to much. The Jets are a team with no character which always gets players with behavioral problems. Always involved in embarrassing, stupid incidents, like Sal Alosi tripping Dolphins rookie Nolan Carroll, the Rex Ryan middle finger dispute, and the viral Youtube video with Mark Sanchez using Mark Brunell as a snot rag. Has players with big mouths like Cromartie tweeting that he will "smash Matt Hasselbeck's face in" and other stupid comments from Revis, Sanchez, Scott, and Pace. Overrated players include, but are not limited to: Shonn Greene, Jerricho Cotchery, Brad Smith, Mark Sanchez, and more. Nicknames for these players include "Dirty Sanchez," "Jerricho Crothery," and more.

v. in American Football, an engagement between a defensive linemen and offensive lineman where the defensive linemen tosses the (typically 320 lb.) offensive lineman away like a rag doll, usually with ensuing similar deleterious actions imparted to the ball carrier. It would be the reciprocal of a pancake, where the offensive lineman drills the defensive lineman backwards into the ground and then lands on top of him.