The reason that I mentioned this is that when Liz started feebly thought-bubbling Anthony, Panicky Idiot Elly and Whipped John had a collective brain-fart that the two of them would do more than vacuously stare into space wishing that the other would do something more than behave like an extra from the Walking Dead. To this end, Elly had hit upon the subtle plan of getting one of John's assistants to stay over and play monogamy cop while she and John toured Washington so that she could bleat like an imbecile about the absence of a Wal-Mart at the National Mall. As with all of Elly's clever plans, this backfired in an amusing way because Sally the Sitter acted like she owned the place; this, of course, extended to having her boyfriend over. Liz's response was subtle and to the point: she'd turned a fire extinguisher on them!
The upshot of that little faux-pas was to teach Elly a lesson about trusting the people in her life that she immediately forgot. After all, she was too busy feeling all wounded because John likes to bomb through the scenery at warp speeds instead of wasting his time buying God-awful crap at tourist traps to remember that her clever plans fail owing to her being as clever as a sack of hammers.