91z's Make It Hot Challenge

What happened

SHINee's Key and Minho, both born in 1991, teamed up for a Make It Hot dance challenge clip. The short was posted on SHINee's official channel tagged with the nickname 91즈 (91-jeu, the "91-line" duo), alongside the hashtags Key, Minho, and Make It Hot.

Why Koreans care

In Korean idol fandom, members born in the same year are often grouped under a nickname ending in 즈 (jeu), a Korean rendering of the English plural "-s" — for instance idols born in 2000 get called 00즈 (00-jeu). 91즈 (91-jeu) tags Key and Minho as the group's 1991-born pair, even though they've already performed together as SHINee members for close to two decades. The joke is treating two actual groupmates as if they were a special, separate duo — Korean fandoms commonly use these "line" nicknames (shared birth year, hometown, school) as their own bonding category, distinct from any official subunit name.

In the Korean comments

Several commenters (majority) focus on how the two men's individual dance styles differ yet still mesh, framing it as proof of long-term teamwork. One wrote: "They're clearly dancing it differently, yet it comes out so harmonious — that's the real flavor of being in a group." Other commenters (fandom) reacted with excitement at getting content from both members at once, treating it as a bonus drop. One commented: "This is the 91-line! Thank you for the double-happiness event, I love you." A smaller set of comments (minority) played a mock-surprise bit, pretending to just now notice the two are actually teammates. One joked: "What, these two look like they're on the same team — (oh right, they are SHINee)."

What the words mean

A foreign viewer might read the joking comment "these two look like they're on the same team (oh right, they are SHINee)" as genuine confusion. It's actually a common Korean fan-comment format: feigning obliviousness for comic effect, then "catching yourself" with an obvious fact — used here to emphasize how naturally in-sync Key and Minho look. Likewise, 91즈 (91-jeu) might look like an official subunit or event title; it's really just a fan-coined nickname for members who share a birth year, not a formal release or unit name.