Definitions by agnoster

Tell Me Something I Don't Know 

TMSIDK is the abbreviation of Tell Me Something I Don't Know. To show sarcasm at the obvious.

Person 1: "It's raining out"

Person 2: "Tell Me Something I Don't Know"

Can also look at sites like www.tmsidk.com for more info.

Tell Me Something I Don't Know by agnoster August 19, 2010