Gullible At Scrabble

At Thanksgiving we had our 2nd annual Scrabble tournament. After one of the games we came back to the table to discover that Sarah had set up the board as it is on the right. One in our party sat down to complete the task.

Lizzie: Don't do it.
Solver: I don't understand.
Lizzie: You know it can't be done!
Solver: [ignores plea]
Lizzie: She's tricking you!
Sarah and I: [watch solver work]
Lizzie: I can't believe you're falling for this!
Solver: [ignores plea]
Lizzie: [in a matter of fact voice]You know, "gullible" is written on the ceiling.
Solver, Sarah, & I: [surprised at her statement, we simultaneously look up]