The song, aptly named “Merry Christmas,” is a perfect blend of silly and sweet that’s cheery, bright and just a touch bizarre.

“Okay now this is a perfect cheesy Christmas song, and I’m totally in love with it.”!

“The best Christmas song to be released in years.

One person even gave us a little music history lesson, saying that “many don't realize Elton John helped get Ed Sheeran first signed.” That certainly explains the chemistry.

One of the strangest things about being human is that people of lesser intelligence tend to overestimate how smart they are and people who are highly intelligent tend to underestimate how smart they are.

The interesting thing is that even though people are poor judges of their own smarts, we’ve evolved to be pretty good at judging the intelligence of others.

Reddit user Gisgiii posed a question to the AskReddit subforum “What is a subtle sign that someone is really intelligent?” and the answers painted a clear picture of how smart people behave.

Wait but that might be more wise than intelligent...

"They can switch up the way they talk to match the person they're talking to without sounding condescending.

To be intelligent you need to be knowledgeable and you can't be knowledgeable if you are never curious," — soup54461?

"When they explain something they make you feel intelligent," — gwoshmi.

"They know when their knowledge ends and say something to the extent of 'i don't know and anything else i say on this topic is ignorant speculation,'" — blutoboy.

"They can ask really good questions."!

"Edit: to anyone not understanding what mean, I’m talking about people who ask “really good questions”, not just any questions, really good ones.

I don’t know how one would achieve this skill(I know I haven’t)," — milkmanbran.

"They aren’t afraid to say they don’t know the answer to a question," — xchernx.

"They can genuinely consider an idea which opposes their worldview without necessarily accepting it," — paidshill29.

It’s a form of code-switching and integrating concepts on the fly and is a clear indicator someone is both socially and conceptually intelligent," — SwimmerAutomatic2488.

"I think intelligent people are more willing to calmly debate/discuss, rather than argue.

I think that truly funny people are often very smart and cognizant of the different ways an idea can be humorous on several levels.

"They say they love learning and they learn something new every day?

Seriously, that little one can move, and in her little puffer jacket no less.

Cats are gonna cat, and you can't put a bunch of little things flying through the air in front of a cat and not expect them to pounce.

They're not that old, but seeing them skipping and jumping like little kids is just adorable.

Simple love, simple joy—it's really all we want.

A group of Broadway actors and singers gathered in New York to sing a tribute to him with the opening song of his musical "Sunday in the Park with George." So beautiful.

He may use a cane to get around, but he certainly doesn't need it to get down.

If this doesn't warm your heart, are you sure you even have one.

Even if the advice doesn't stand the test of time, it's definitely a keepsake that would last

Waking up on the wrong side of the bed doesn't have to negatively impact the rest of the day

Just because they listen, it doesn't mean that they are your friend or have your best interests at heart."

If you ever want software online for free, don’t search for "free"

"Getting angry at people for making mistakes doesn't teach them not to make mistakes

If you’re itching to know what the other millions of people had to say, you can check out the original Reddit post here, and perhaps glean some gems for your own list