Goodbye, Old Friend

Weeb Gilroy's death has Lowell searching for the right words to write for a eulogy for his long time friend.Words fail him at the end;all he can think of is to finish working on the plane that they used to work on.With Joe's help they finally get it into the air.
Meanwhile,Helen,who hasn't slept in days due to a squirrel in the attic keeping her up all night,suffers a concussion and the doctor tells her she must stay up for at least 24 hours as a precaution.Brian and Joe take on the job,resorting to using water guns to keep her up.In the end she tries to seduce Brian into letting her sleep,but it fails when Joe catches her in the act after pretending he was going to bed.

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S04E21 - Another Wedding