When you cum in a girl, and keep fucking her until your dick is floppy and soft. Like a spaghetti.
Jon: "I totally fettuccine alfredo'd my girl last night!"
by Patoat March 7, 2016
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As originated by the Italians in the 17th century, fettuccine alfredo was originally known of as a simple pasta dish containing long stringy noodles and cheesy sauce.
It was not known until recent times that the special ingrediant that gave this delicacy its distinct taste was actually human semen inserted by the overworked servents of the Italian people. This tradition has continued throughout the ages, and strongly today.
It was not until the 20th century that this idea has been brought into the bedroom and under the sheets as a recreational sex act that has a little extra spice of its own. To perfrom this ridiculously arousing and scrumptious stunt one must boil noodles and alfredo sauce in pots until perfectly "al dente" next, the male must bring the boiling hot pot and however many desired bowls and eating utensils into the bedroom and dump the contents steaming hot water and all, into the females vaginal crevices or male/female anal cavity possibly causing 1st-3rd degree burns on the inside of the chosen arena. After this is complete, one must bring alfredo sauce and also insert that into the opening of choice. Next, one must perform sexual intercorse until the point of climax, then ejaculate all over the zesty creation containg noodles, vaginal fluid, alfredo sauce and more. once the ejaculation is complete and the penis is limp. open the vaginal/anal lips and dump the contents into the bowls, grab a fork and enojy!
The Olive Garden was closed last nite, so me and Enrique made some fettuccine alfredo of our own.

For our school's food festival I decided to show off my fettuccine alfredo for everyone to taste.

My grandma was in the hospital so I cooked her up some homemade fettuccine alfredo.
by Kevjusray Jaborrteza August 20, 2007
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When you go to a grave yard when extremely hungry but have no money and dig up a grave and with a sledgehammer, slam the abdomen, and the contents that spew out the crouch region that look like Fettuccine Alfredo are feasted upon yourself and/or friends you brought along as a meal to satisfy your extreme hunger.
You: Bro I am so fucking hungry right now but I blew all my money on that blow.

Friend: That’s alright, let’s just go to the graveyard and get some budge Fettuccine Alfredo
You: Good idea, it’s been a long time since I’ve had some budget Fettuccine Alfredo.
by TriggerFuel April 22, 2019
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Another term for kissing, because fettuccine noodles are long and flat like tongues.

First used in Supergirl #19, when Supergirl and Wonder Girl were about to Kiss (we're not joking. seriously, look it up) and Ravager (who is apparently the lesbian equivalent of a cockblocker) interrupted them (with a rocket launcher) and said the bellow sentence.
"Wonder-Girl AND Supergirl scraping fettuccine alfredo? Someone get a video camera... we'll get two billion hits on YouTube."
by Woodunt U. Lyketano July 15, 2014
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