Notes From Reviewer

Title 

The title is pretty funny, I remember snorting when I first read it. When it comes to it's connection in the story, I'm guessing it's a reference to how much of an idiot Sehun is or something which is good. Titles that connect in some way or form are definitely good. Though since the story itself isn't in lapslock, I figured the title would be Giftwrapped Idiots but that's just me being a stickler.

Description & Foreword 

The description was short and simple and perfectly explains the story. The description didn't give too much of the story away either which is also another plus. I hate when story descriptions practically give away the whole story since there's no point in reading it after. You did a good job on this part.

Plot

Pretty generic plot for a oneshot, I guess. The whole, two people like each other but won't admit it and the best friend comes in because he's fed up and just wants it to be over, kind of thing. I'm pretty sure I've read something mildly similar (not 100% similar just plot wise similar) so it wasn't that original but it wasn't terrible either since the way you wrote it made it your own. 

Writing Style 

In part D near the end, there's a small typo - nothing too bad - but it was something I just happened to notice.
It said: "What the did you just said?"
Corrected, it would be: "What the did you just say?"
But besides that, everything was pretty good. The writing style was pretty interesting and I liked some of the words used in this. It was a pretty enjoyable read even if I don't ship straight pairings usually.

Characterization 

Chanyeol is the casual best friend, it seems, who is fed up of Sehun (I would be too though) and helps him get with the girl, even if it means getting a bloody nose, it seems. He has nice comebacks and such though. 

Sehun, the idiot who has no backbone to ask her out I guess, pretty generic character, that applies to Chanyeol too, but you made it unique in your own way (I think since it's apparently based off something) but still, he wasn't a terrible character.

And there's Soojung, who I won't say much about since there really isn't much to say overall about her. She's just kind of there since the story is mostly from Chanyeol's view on things it seems.

Flow 

Not too choppy, overall pretty good. I liked the flow though the last part - the extra - made me kind of lost but that's just me plus this was based off something I have no clue about so I'm probably just missing out on something. Though, I like the a, b, c, etc. sections, nice touch I'd say.

Personal Enjoyment 

Sorry for such a short review, there just isn't much to critique here since it's a short oneshot and pretty self explanatory. There wasn't many typos, if at all, and overall it was pretty good. Overall (I say this word way too much, excuse me), I didn't mind reading it, it wasn't awful and as I said previously, I enjoyed it despite not going for straight ships.