Define Stuff You Meaning

Referring to the first, yes it is derived from STFU which means "shut the fuck up" Stuff you is a tamer version more widely accepted, yet still holds the same message of shutting up.

Verb.

Derived from the term stfu.

Stuff You Should Know is a podcast that is on iTunes, presented by HowStuffWorks.com.

Howstuffworks.com is a journalism website on which there is an article on many a thing.

SYSK, as it is known, is hosted by Chuck "Chuckers" Bryant, and Josh Clark.

Stuff You Should Know is, in my opinion, good. Although this, many people accuse it of being poorly researched and just plain wrong. So be it, it's your right to dislike it.

So, I suppose if you're interested, take a look.

Also, there are many Howstuffworks.com podcasts,such as

Stuff You Missed In History Class;
Stuff Mom Never Told You;
Stuff They Don't Want You To Know;
Techstuff,
and Stuff From The Science Lab.

among others, I'm sure I missed at least one

A different saying for I want to fuck you

To put cram ones testicles fully inside a woman's vagina. (See also: "T. neck that cavity")

When you suffer the rath of Gru, he will stuff you in a pizza then cook you and eat you. Basically when someone gets really mad at you, they will stuff you all in the crust.