Ne, ne,(other language for "father"),(insert cultural drink here) chodai! Ne, ne, (other language for "mother")! Mukashi ni tabeta (insert cultural food here), ano aji ga wasurerarenainda~~!
Like, you know, total Valley Girl talk is, like, totally associated with Poland, like, ohmigod. (And Polish fans have caught on with saying "Totalnie".)
Mochimerica as something creepy. Seriously, we've seen him as a zombie, as worth 5million experience points to kill, and erasing someone from existence for trying to judo chop him.
Ukraine's "huge tractsof land". Even people who have never heard of the series would probably get the euphemism.
Which seems to have led/be related to the new fan religion called Doitsuism.
English version:
The dub makes a radical decision to apply the stereotypical, pretty offensive accents for each respective country, something that ADR directors usually try to avoid. This, along with the changes made by the translators that introduced new jokes, insults, and odd voices, resulted in some new memes, such as:
Romano in the English dub. The man is a memetic hurricane of insults. And all from one 2-minute video.
THIS WEATHERMAN IS PREDICTING A 99% CHANCE OF SHITSTORM, AND IT'S COMING RIGHT AT YA!
The video containing this line was out for less than a day before people started using it in case of Internet Backlash. (specifically, the backlash that came from that clip)
Which is actually an ascended joke from the fansubs.
"Things are turbulent!" "I'm lashing out at you!" "Things are turbulent!" "I'm lashing out at you!" "Things are turbulent!" "I'm lashing out at you!" ... fades into background as another character talks.
Soldier looking at Holy Rome's picture of Chibitalia: "Oh ho! Is this the painting of your little girlfriend, or boyfriend, or gender-neutral chibi-thing?" Awesome.
"Nice * insert Freud Was Right item here* ". Consisting of a song from Aqua Teen Hunger Force, and a character in a stripper pose wearing undies with a country flag on it, it goes from there. And it started with..."Nice Florida." Funny how America starts a lot of memes...
"England looks DEAD SEXY in a miniskirt!", which is an actual quote from Eric Vale. The retorts of "America looks dead sexy in a miniskirt" (also an actual quote), and "IT'S A KILT, YOU WANKER!" are obvious tagalongs.
The voice actors often get asked to say "[Nation] looks dead sexy in a miniskirt!" at cons because of this.
(Patrick Seitz made a comment about frequently having fans ask him to say he loves Italy in his Germany voice.)
Scott Freeman: "Have you had to tell anyone that Italy looks good in a miniskirt?"
Fans: *cheer loudly*
Scott Freeman: "I think a few of us have gotten that one."
This meme actually started as a throwaway joke in the Fullmetal Alchemist fandom, after someone got Ed's VA to say the "sexy" line, sans the "miniskirt" bit (he added on his own).
Any reference to Denmark now must immediately be followed be the phrase 'suck my dick'.
Hussieruya. Explanation Crack shipping of Himaruya and the creator of Homestuck, Andrew Hussie. Popularized by artists Tannanana and Sclez on Tumblr. After another Tumblr user, himapapaftw, informed Hussie of the crack pairing by providing a link to the Hussieruya blog, many fans rushed to Himaruya's inbox to send him the same link. He has yet to respond.
Grandmano. Explanation Meme stemming from this picture◊ of Romano in a grandma costume for Halloween.
Couchtalia. Explanation In the 2011 Bloodbath, Austria gets tired of walking and Germany offers him his back to sit on. This branched out into fans pasting pictures of the characters onto the names of objects that sound like their name (example: "brussia", "cubacle", "austreea", etc.) and has become a meme in almost no time flat.
Twisted, shit-spewing CUMDONUT.Explanation A minor meme on Tumblr, it came from a comment left by a member of the series's Hate Dumb on an anti-Hetalia stamp on deviantART. The comment found its way onto dumbdeviantart, a popular blog that's Exactly What It Says on the Tin, and became a bit of a joke among fans on Tumblr.
ENGLAND'S PENSI SPERM WILL TURN YOU BRITIS. Explanation Refers to a fanfiction full of horrendous grammar and spelling where England turns America "britis" by raping him.
Communism is HOT! Explanation A common response to any fanart of Russia/China.
UncomfortabletaliaExplanation "Hetalia AU where everything is the same except..." followed by a random difference like "...England's eyebrows are normal" or "...everyone's eyes are always shut except for Italy" and usually accompanied by a photoshopped image.
Paint it White
General pre-sub consensus: 'I have no idea WTF just happened.....BUT THAT WAS THE BEST MOVIE EVER!!!!'
In the English dub, France's Doctor Who reference was slipped in especially as a tribute for J Michael Tatum, who voices him. It's very popular with the English fans.