Lego Neck
A severe cramp that will occur in ones neck after playing on the floor hunched over a box of legos for an extended period of time. Can also be used to describe a neck cramp in different circumstances
"I've been looking for that antenna piece in this huge box for so long, I have lego neck."
"I wish we had sat farther back in the theater so I didn't get this lego neck."
"I wish we had sat farther back in the theater so I didn't get this lego neck."