Yay! Since littlemanpoet does not capitalize his own name, when you take the initials ("first" was supposed to indicate this) it is lmp, which looks like imp, a "little devil".
Your thread, Sauce. But first, a request for advice: how could this clue have been improved? I'm really trying to learn how to solve and write cryptic clues...and I thought this one was very straightforward, which makes me wonder if I didn't write it properly.
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<=== Lookee, lookee, lots of IM handles!
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