He just had the legs on.

Warning: the following article may shatter your sense of reality.

Proceed at your own risk.

Tyler James Williams on ABBOTT ELEMENTARY, Big Bird on Sesame Street Season 50

Tyler James Williams and Big Bird (with head).Liliane Lathan/ABC via Getty Images; HBO

Tyler James Williams is reflecting on a disturbing childhood memory: seeing Big Birds insides.

In an interview onSiriusXMsThe Jess Cagle Show, theAbbott Elementarystar discussed his time working onSesame Streetas a 7-year old.

The head was off and he just had the legs on, and it definitely shocked me.

Tyler James Williams on Sesame Street

Tyler James Williams on ‘Sesame Street’.Sesame Workshop

They stay in character the entire time, he remembered.

I’m seeing behind the curtain, but I’m still getting things here that are comfortable and familiar.

You also then get a really good understanding of how hard that job is to do, he said.

Williams also revealed a shocking fact about theSesame Streetcast.

I will say this: Snuffleupagus is the head and then the butt.

Those are two different people.

That has to be the case, but yeah.

The same actor does all three.

Watch the full clip above.