Originally Posted by Ole Miss Texan
You'll also hear them say WILL, which is the Weakside Linebacker.
Weak side meaning opposite side that the TE is lined up on. But as Lucky said, the Texans don't flop their Sam and Will LB's around based on what the TE does. Typical strong side is the right side, when the TE lines up outside the RT, you have an extra blocker or guy on the line of scrimmage, making it the strong side.
Sometimes you have two TE's sets as well, I don't recall the Texans using this too much.