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15.
Added to the end of a sentence that could of been taken the wrong way... if you're thinking about homo stuff that is. If you are, then you'd feel the need to reaffirm your maculinity by saying no homo
I feel like eating some salted nuts...no homo.

Give it to me bruh...no homo

I'ma be all up in your ass...no homo
by Al-Arsham February 07, 2008
 
16.
said after something potentially gay was said. or stating that something is not gay even though it sounds that way
1.That dude has huge calves, no homo.
2.Look at that pretty mahfucka, no homo
by ProFound November 25, 2005
 
17.
An Adjective: A phrase typically used in conjunction with a salutation, used in a setting where a group of at least two men greet at least two other men in a potentially effeminate manner, to articulate that the interaction contains, nor can there be derived from any homosexual context or meaning.
Stan and Alex hugged their friends Bill and Paul when they met at La Guardia Internation Airport, and Stan quickly stated "nohomo" as they embraced.

"Nohomo!" One of the group cried, as all of them shed tears for their fallen brother, who caused a 179 car pileup on the I-75 after seventeen tequilla shooters and ten beers.
 
18.
An interjection used to counteract a statement or act that might be interpreted as expressing homosexual desires.

As of late, the word has humorously evolved to counter a statement that has even the slightest tinge of homosexuality to it.
Some of my favorites from the internet:

"...commanding the dirty funked up wah-wah guitar, lush arrangements, heartstopping strings, wailing double-tracked backing vocals and trippy backwards fx to do backflips and weave their way in and out of macked-out horns and throbbing bass grooves (no homo!) while crisp snares and reverberating bongos underline the whole experience."

And even funnier (to me):

"A quick search on froogle (no homo) pulls up 160 Gigs of external harddrive (again, no homo) for as cheap as $106."
by inktostaintreeskin October 06, 2006
 
19.
A phrase used to either deny or imply a sexual innuendo, usually out of homophobia or simply to make something you or someone else says sound clever or humorous.
"if he doesn't like it he can kiss my ass, no homo"
or
person 1: "A bunch of sea men were eaten by whales in a tragic accident today."
person 2: "no homo."
by Nacho January 02, 2005
 
20.
A phrase added to the end of a sentence used to redeem a particularly homosexual phrase.
I'd really like to fuck that guy in the ass, no homo.
by Mary Bathory November 11, 2007
 
21.
Said after a phrase that could possibly be interpreted as gay.

Nothing says "I'm insecure about my sexuality" like feeling the need to say "no homo" after every sentence.
Man, I love you.. No homo.

Your ass is mine... No homo.
by Broneill December 09, 2010