Siamese Sinus Flush 

When a female puts her nostril on the males urethra and the male urinates and the urine goes up one side of her nostril and comes out the other side, therefore creating the sinus flush.

“Wow, did you hear John gave Becky a Siamese sinus flush?”

Siamese Sinus Flush by Jackatee March 20, 2021

Siamese Handbag 

The act of having sex with two elderly women whose skin have the texture of a handbag.

Doug: Man I wrecked those two chicks last night!

Alan: That's called a siamese handbag buddy.

Doug:....sweet

Siamese Handbag by Goat Lad June 26, 2010

Siamese Snake Charmer 

An activity under BDSM in which a woman restrains a man by tying or handcuffing him to a bed, then proceeding to implant a string of iron filings in his urethra. The man's penis can then be controlled by the woman using a magnet, which she can exploit to do tricks with his penis, or simply make it more erect.

John: Hey man I heard you're still struggling with Erectile Dysfunction, are things going better now?
Phil: Oh yeah I've still got a limp cock but it's fine, my girlfriend gave me an amazing Siamese Snake Charmer last night

Siamese Snake Charmer by IanPaiceFan69 March 11, 2022

Siamese Nigs 

two or more black people that always repeat the exact or almost all of the all of the sentence the previous one said. This pertains to jokes as well.

Tyquan: Yo nigga, that bud was good as shit.

Sha'Riquanice: Nigga, that bud was good as fuck.

Tyquan: Shut up you nappy headed bitch.

Sha'Riquanice: You the nappy headed bitch.

Tyquan: How you sound right now?

Sha'Riquanice: Nigga. You trippin. How you sound nigga?

Tyquan: Ight den.

Sha'Riquanice: Ight den.

White Guy Overhearing: Fucking Siamese Nigs. I'll tell you how you sound. Fucking retarded. Thats how you sound.

Siamese Nigs by D Siegs August 25, 2010

Siamese Eskimo Bro 

When two bros simultaneously penetrate both the vagina and anus of a single woman with their wankers, they become Siamese Eskimo Bros. Can also occur when both bros simultaneously insert their wankers into just one of said orifices, although this is much more difficult depending on the size of the talliwhackers and the diameter of the females vagina or anal cavity.

Jeff and Tom sealed their friendship when they double penetrated Sally by running train on her pussy and anus at the same, thus becoming Siamese Eskimo Bros.

Siamese Eskimo Bro by FapDaddy September 2, 2014

siamese punch monkey 

Double fisting.

holy shit, that girl was so loose I siamese punch monkeyed her.

siamese punch monkey by bronco Felcher May 30, 2010

Siamese nose burn

when you stick a straws up both nostrils and try to sniff multiple lines of drugs or miscillaneous.

She sniffed so much coke up both nostrils it gave her a Siamese nose burn.

Siamese nose burn by blazed1 April 23, 2009