The official GemStone IV encyclopedia.
FLUSTER is a roleplaying verb.
Fluster: >fluster You blush and babble a few incoherent words, looking foolish but sincere XXX blushes and babbles a few incoherent words, looking sincerely flustered.
>fluster xxx You glance bashfully at XXX, blush, and mumble a few words. XXX glances at you bashfully, blushes, and mumbles a few words, plainly embarrassed.