Sam: Well, thanks!  You can get these items a variety of places, including STORES and ONLINE-

Cas: SAAAAAAAAM!

Sam: Uh, ‘scuse me.

Cas: Did you sneeze?

Sam: No.

Cas: What are IDK?  It’s something I DON’T KNOW, so it SCARES ME.

Dean: “IDK” is slang from th’ INTARWEBS, Cas.

Sam: Oh, boy.

Cas: REEEEEEALLY?

Dean: Yup.  Those Intarwebbers get real tired when they’re PUSHIN’ stuff through TUBES, so they make up SLANG!  So IDK is actually “I Defy Karbunkles!”

Cas: Oooo!

Dean: An’ that’s not all!  LOL is “Lounging On Lolipops.”  ROTFL is “Ruminatin’ On Th’ Footloose Lunatics.”  OMFG is “On My Foot, Gustavo!”

Cas: Ah!

Dean: An’ IDGHP, beyond any SHADOW OF A DOUBT, an’ despite what you moght hear elsewhere, absolutely and positively stands for “I Didn’t Grab His Penis.”

Cas: Dean, you are so KNOWLEDGE-ABOBBLE!

Dean: Just ask me!

Groot: I AM GROOT!?!

Sam: Yeah, I couldn’t’ve said it better, Groot.