It's a parody version of Sulu from the original Star Trek series, movies, comics and cartoons. He's pissed off that everyone says he's gay, since the last Star Trek film. Not that there's anything wrong with it.

Disclaimer: Yes, it's public knowledge that George Takei is openly gay in real life. However, his character in Star Trek was always meant to be canonically straight in cannon Star Trek. There was even controversy about this since the production of "Star Trek Beyond."

Although they did make Sulu gay intentionally as a means of honoring George Takei publicly, the truth is George was asked several times about this prior to the film being finished and he never wanted to make Sulu gay. He stated his preference was for them to make a new character who happens to be gay because he didn't want to disrespect Gene Roddenberry's original vision for Star Trek, which saw Sulu with a wife and child. Of course, Paramount ignored his wishes and made Sulu gay anyways while claiming it was to honor him. Not that there's anything wrong with it. However, Sulu is now pissed.