When you’ve been sussing for a fat minute and you think you might be gay, but you’re frustrated because you would be disowned by your devotely Christian family.
Billy was going through the J.C. Penny catalog when he suddenly popped a boner to one of the guy models. Sustrated, he went and fapped it out to get out all of his anger.
person a: Kate and Beth's coversations over ar\im were distrubing.
person b: That's because Beth wants Kate to do her in the ass. They have a lot of lustrage even though they hate each other.
Having such a high level of fustration that you completely forget to pronounce the first "R" in the word "frustration" when you try to describe your feelings to your peers.
I live in the southeast US. I first started hearing "flustrated" by local speakers a few years ago. It was apparent that the speakers were not using this for comic effect; the speakers were quite angry at the time.
I don't think that it's a combination of flustered and frustrated...just a variant pronounciation of "frustrated". If you look at the examples used by the other contributors on this site, I think that they illustrate the use of this term as "frustrated".