"Ur So Gay" is a song released by American singer Katy Perry from her EP of the same name. She co-wrote the song with its producer Greg Wells while Drew Pearson served as the track's engineer. It was later included on her second studio album One of the Boys.

When asked about the song, Perry and her mother said it was about sex. The song "wasn't meant to be a big single or show what the album is going to be all about. That was for my Internet bloggers, so I'm not coming out of nowhere."^[2] Perry's A&R representative Chris Anokute confirmed this by saying that they had no plans for radio coverage but just wanted to put this "novelty" song out online as an introduction to see "what the attraction was". As expected, sales were low, but Anokute said the track did well in terms of building a press story.^[3] Due to the song's content, there was concern from the label over commercially releasing "Ur So Gay".^[4]

"Ur So Gay" moves at a moderate pace.^[1] According to digital sheet music published at Musicnotes.com by Sony-ATV Music Publishing, the song is written in the key of E minor and the tempo is at 80 beats per minute. Perry's vocal's in "Ur So Gay" span from the lower note of E₃ to the higher note of D_#5.^[5]

The song's lyrics have been described in a positive review as "eighteen different kinds of wrong".^[6] The song itself has been described as an "emo-bashing anthem that's either horribly homophobic, a sly piece of social commentary or, possibly, both".^[7] The Tampa Bay Times wrote that the "boyfriend-skewering..... isn't homophobic, but it does pummel straight guys who can't handle her edge".^[8] Billboard senior editor Chuck Taylor believed the song "has all the potential to amuse the masses," further commenting that the song is "just too good" for top 40 programmers to not play.^[9]

Some critics, however, conclude the song is homophobic. Ugo.com says the song settles for "catchphrase-homophobia"^[10] while AllMusic describes the lyrics as "gay-baiting".^[11] Writing for Glamour, Christopher Rosa called the track Perry's worst song. He criticized its "offensive queer tropes" and found its lyrics problematic.^[12]

The video was directed by Walter May^[13] and released in November 2007. According to senior vice president of A&R at Capitol Records Bob Semanovich, the purpose of the video was to introduce Perry to audiences in a way that was "fun and playful". Perry conceived the idea to center the video around dolls, as she wanted audiences to know that the song was meant as a "tongue-in-cheek dis[s] track".^[4]

In the video, Perry plays the song in front of a bright cartoon-like background with clouds that have smiley faces on them. The characters in the video are played by Fashion Royalty dolls.

Perry performed the song as part of her MTV Unplugged set. Also on Hello Katy Tour and California Dreams Tour.

Credits and personnel adapted from the One of the Boys album liner notes.^[14]

• Katy Perry – writer, vocals, whistles
• Greg Wells – writer, producer, piano, guitar, bass, beats
• Drew Pearson – recording at Rocket Carousel Studio (Los Angeles)
• Joe Zook – mixing at Aus Studios (Studio City)
• Jerry Hey – horn section, horn arrangement
• Gary Grant – horn section
• Bill Reichenbach – horn section
• Dan Higgins – horn section