The song looks at the topic of romance from several points of view, and in doing so, touches on other subjects such as illegal drugs, the city of Los Angeles, the perceived glamour of gang culture, and the lavish, hedonistic lifestyle led by many rappers and musicians. The chorus, sung by Justin Timberlake, is about the moment when a man thinks a woman to whom he is sexually attracted may also be attracted to him. The man second-guesses what he thinks he has seen, expressing a wish that love should not play around with his emotions. Meanwhile, another male observer opines that the Timberlake character is out of his element and should not bother attempting to further relations between himself and the object of his affection, since he lacks the necessary gangster credentials. The verses of the song, rapped by Snoop Dogg, mainly following Snoop Dogg's attempts to charm a woman or women. The first verse starts with a brief introduction boasting about the song's hit potential, due to the involvement of Snoop himself and producers the Neptunes. Snoop then appears to become distracted by a passing woman, and attempts to charm her by offering to procure cannabis for her and mentioning his gang, the Crips. In the second verse, Snoop boasts about the glamorous side of his home city, Los Angeles. In the third verse, he redoubles his efforts at seduction by promising his interlocutor a flight on a private jet to London and the holiday resorts of Ibiza and watching Venus and Serena Williams in the Wimbledontennis championships. Charlie Wilson then provides a more experienced point of view on love, advising all concerned not to be foolish, to appreciate what they have, and not to be distracted by "a pretty face". This implies that the Timberlake and Snoop characters may already be in relationships, and are considering infidelity with the women mentioned in the song. The song's three vocalists thus show three stages of a man's romantic life: Timberlake as the young ingenue; Snoop Dogg as the Casanova in his prime; and Wilson as the experienced older man dispensing advice to his younger companions.
The single reached number two on the UK Singles Chart in May 2005 and number 46 on the U.S. Billboard Hot 100 chart. However, it was more popular in Australia staying at #1 on the Australian Singles Chart for two weeks. It was performed by Snoop Dogg at the Live 8 concert in London on July 2, 2005 along with a few of his other hits. The song interpolates some lyrics from The Gap Band's 1982 "Early in the Morning" and Cheryl Lynn's 1978 "Got to Be Real".
Critical reception
David Jeffries highlighted and praised: "The up-tempo "Signs" with Justin Timberlake is glittery disco fun, but it ain't gonna keep Snoop from being himself." RapReviews described: "look for him sharing the spotlight with Snoop and Justin Timberlake on "Signs," although the D-oh-double-G still steals the show: "It's legit, you know it's a hit When the Neptunes and the Doggy Dogg fin' to spit You know he's in - tune with the season Come here baby, tell me why you leavin? Tell me if it's weed that you need If you wanna breathe, I got the best weed minus seeds Ain't nobody trippin, V.I.P. they can't get in If somethin go wrong then you know we get to crippin" Justin Timberlake does crip-hop? Sounds wrong, but it comes out just right."
