うめっぱれっ “Umeppanē–!”
A phrase combining two different words into one:
上手い Umai – Delicious; tasty; good; nice
ぱねぇ Panee – a lot; to a very great extent; absolutely Slang, Abbreviation
The phrase as a whole is usually translated in the Yukkuri fandom as “This shit’s so good!” or “It’s so fucking good!” (Or I guess that would be when "kore" is used, but it may sound incomplete in English just to translate it only as "fucking good!" or "fucking tasty!")ガッ “Gaw–!” “Gobble!”
ガッ “Gaw–!” “Munch!”