by Kakashi_works_at_amazon_tiktok December 12, 2020
 Get the I Don't Knowmug.
Get the I Don't Knowmug. Costello: If I mentioned the third baseman's name, who did I say's playing third?
Abbot: No, Who's playing first.
Costello: Stay off of first, will ya? What's the guy's name on third base.
Abbot: No, What is on second.
Costello: I'm not asking you "who's on second?"
Abbot: Who's on first!
Costello: I don't know
Both in unison: THIRD BASE!!!!!!!!!
Abbot: No, Who's playing first.
Costello: Stay off of first, will ya? What's the guy's name on third base.
Abbot: No, What is on second.
Costello: I'm not asking you "who's on second?"
Abbot: Who's on first!
Costello: I don't know
Both in unison: THIRD BASE!!!!!!!!!
by pleesedu naht ask June 1, 2006
 Get the I Don't Knowmug.
Get the I Don't Knowmug. I just asked my friends what I should add to the urban dictionary and they said "I don't know" so here is the definition :)
by depressed_bin_chicken123 September 26, 2019
 Get the I don't knowmug.
Get the I don't knowmug. by Pimpage. April 2, 2005
 Get the I don't knowmug.
Get the I don't knowmug. by dtownboy December 28, 2002
 Get the i don't knowmug.
Get the i don't knowmug. I don't know; or in other words: I do not give a fuck about what you're asking me.
Mostly used when you don't want to start a conversation with someone.
Mostly used when you don't want to start a conversation with someone.
1. Mom: "What do you want to eat for dinner, son?"
Son: "I don't know, mom."
2. Joe: "How are you doing that?"
Billy: "Dude, I don't know."
**Real Signification**:
1. Mom: "What do you want to eat for dinner, son?"
Son: "Shut up, mom, I'm doing something more interesting than you."
2. Joe: "How are you doing that?"
Billy: "Dude, I don't give a damn about you. Get the fuck out."
Son: "I don't know, mom."
2. Joe: "How are you doing that?"
Billy: "Dude, I don't know."
**Real Signification**:
1. Mom: "What do you want to eat for dinner, son?"
Son: "Shut up, mom, I'm doing something more interesting than you."
2. Joe: "How are you doing that?"
Billy: "Dude, I don't give a damn about you. Get the fuck out."
by cervul March 26, 2014
 Get the I don't knowmug.
Get the I don't knowmug. by IKNOU March 5, 2019
 Get the I don't knowmug.
Get the I don't knowmug.