YSGTB 

You should got to bed.

YSGTB because you have school tomorrow.

YSGTB by l80 September 17, 2011

YGTBSM 

You've Got To Be Shitting Me

You've Got To Be Shitting Me!

YGTBSM by Tony Nguyen July 12, 2005

YGTBFSM 

YGTBFSM: Acronym for "You('ve) Got to be Fucking Shitting Me". Likely military origin.

Troop 1: We're getting recalled for a squadron-wide piss test.

Troop 2, just returning from Amsterdam: You've got to be fucking shitting me (YGTBFSM).

YGTBFSM by poopoopeepeedaddy December 19, 2013

YGTBFKM 

Email abbreviation for "You've got to be fucking kidding me". Often used by Navy types as a show of incredulity.

What? SuppO's serving beef yakisoba again? YGTBFKM!

YGTBFKM by King Neptune March 4, 2006

yhgtbfkm 

"You Have Got To Be Fucking Kidding Me", indicating that the speaker cannot even begin get his mind to beleive any part the previous statement.

<User1> OMFG! That noob just posted his IP and root passwd to USEnet asking if someone could help him fix his sound card!
<User2> :o YHGTBFKM!

yhgtbfkm by grasshoppers January 20, 2003

ygtbkm

You've Got To Be Kidding Me. Used by people on AIM, or other types of instant messengers.

cutegirl598: josh asked me out last night!!!

em0chick: ygtbkm!

ygtbkm by dYl@n$gIrL July 28, 2007

ygtbfkm 

You've Got To Be Fucking Kidding Me, typically uttered in response to anything that is so totally stupid as to be unbelievable.

Note: often pronounced more rapidly as "YiGiTBiFKiM"

Seriously, Congress? You're going to reach an interim deal on the fiscal cliff for now, and then resolve it more permanently in a couple months? YGTBFKM!

ygtbfkm by DaddyG January 10, 2013