Too many posts here are lacking explanations.
Please rectify this as soon as possible.
They can't all be the best lexicon of inside jokes post ever.
That joke is the Bomb.
Parsing error: Explanation not found.
"They can't all be the best [...] ever" is a reference that I find overused and strangely overrated, and that in my humble opinion should be dropped in favour of exploring still-uncharted humour-space. Another joke equivalent in its drabness would be posting scout in the Really Bad Card Ideas.
Now that we have lifted any ambiguity on the context, an analysis of my post can be provided. Saying that something "is the bomb" is slang for saying that it is awesome or cool. However, Bomb was a card whose designer refused to let go, despite being told repeatedly that it should be left to die. By juxtaposing two usages that mean the opposite thing, I create a humourous contradiction, hopefully provoking laughter, a subtle smirk, or at least the lightest hint of a dopamine shot, in the reader. And the capitalization of the word Bomb still keeps my opinion on the matter clear, unequivocally refering to the card instead of the object.
The smiley face was used to convey that, while personally I am through with the reference, I bear no ill thoughts against the poster. It was necessary because tone is hard to convey through written text. You might have thought that I was being overly aggresive otherwise, which never was my intention.
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reference to the second post in this thread for meta commentary on this post]
EDIT: expanded answer for extra obviousness and meta-obviousness.