Polish Tom's coined phase for stating that something (or anything for that matter) has been completed.
After finishing a beer (typically Fosters or Tatra), Tom slams down the can and yells "dats it"!
by Neighbor Chuck October 24, 2013
A term used when nothing else is needed to be said.
Teacher: You got an F on your midterm.
You: Dats dat.

Parent: We found weed in your closet. Your grounded for the summer.
You: Dats dat.
Parent: Dats dat.
by Emilionaiiire April 12, 2009
Shorter version of that (cuz the internet is fucking lazy)
hey, can you pass me dat thing?
by massivesimpians March 9, 2017
Originally from the expression dat ass, in which the targeted female derriere is said to induce an emotional response of amazement and/or attraction.

The same principle applies, except the 'ass' is replaced by whatever object is source of the impression. Plural version can also be used ("dem ...", see Example 3).

Can also be used in a sarcastic way with respect to the above utilization. (See Example 4, 5)
Example 1:
"Hey man, have you seen this awesome dancer?"
"Oh wow, dat skill."

Example 2:
Friends watching Starcraft 2 streams:
"Dat micro"

Example 3:
When a new movie/video game is released with insane graphics:
"dat CG" or "dat graphics" or "dem graphics" (plural version)

Example 4:
Dota2/LoL context, when referring to a hero as being terrible/bad:
"dat <hero name here>"

Example 5:
When watching two snails racing against each other:
"dat speed"

Example 6:
Big boobs are being displayed.
"dem boobies"
by BlkBox December 4, 2012
I went for a long bike ride and I am freaking DAT
by Datguy7 April 15, 2018
that
person 1- How was dat party that last dogg?
person 2- dat shit was off da hook
by Nikki Dinch September 16, 2003
Derived from THAT.

Commonly used by those who are either too lazy to add the fourth letter, or teen homeboys and teenybopper girls who think that it 'iz totali awzum to speel inkorectly'. These people commonly listen to bastardised punk and 'NU Metal'
Man, dat Good Charlotte is totalli awzum!
by Toymaker April 24, 2005