Literally translated as "red porridge with cream," this is a Danish dessert dish traditionally made with red currants, raspberries, basically any red berry-like fruit, and topped with cream and/or whipped cream.

It is also a tongue twister that Danes use to mercilessly screw with non-Danes. They'll make you say it. If you're not from Denmark, it's impossible. They will laugh. Hard.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

the best kind of orgasm you can have

A word english people can't pronounce because they don't have soft d's but hard ones.
"Rød grød med fløde" is a basic danish way of mocking english or non danish speaking folk.
"Rød grød med fløde" is red porrigde with cream.

A danish saying foreigners can't say

A word danish people use to make American tourist sound stupid, because they simply can't pronounce the "ø".

the word thats impossible to say to anyone thats not scandanavian