UMMM!

The sound made when something absolutely amazing happens, (cumming on a girls face, doing a perfect headshot on CSS, getting a hole-in-one in golf), to perfect this sound you must have a fairly deep voice and put all your power into it until your throat hurts!

Rob: Finally fucked that girl Alex last night, as i cummed over her tits i let out the greatest 'UMMM!' ever, i'm not gonna lie, IT WAS GOOD!
Adam: Thats what i like to hear!

UMMM! by BrownusBearus August 3, 2010

ummm 

when you're trying to think of an excuse

ummmmm

ummm by EveryoneDeservesHappiness421 March 15, 2018

ummm 

usualy said by a bloke when asked a question. any question as a matter of fact.

it can also mean the following:
no
yeah
err no way!
totaly
meh wotever
go away
ummm
*clears thoroat*

Girl: Do you have a crush on me?

Boy: ummm...

ummm by Neko =^_^= August 11, 2006

ummm 

The response to a question that you know the answer to but don't want to admit, the response to a question you don't know the answer to or just a response to piss someone off.

"Can you help me reformat my hard drive?", ummm...

ummm by playball25 January 4, 2012

Ummm 

The ultimate form of being bamboozled;looking a train of thought mid conversation and trying to come up with it on the fly.

“Billy, you know I identify as an Attack helicopter right?”
-“Ummmmmm...”

Ummm by Crythical June 28, 2018

Ummm 

Uummmmm

Ummmmmmmm

Ummm by JDMac12 June 5, 2019

Ummm 

ummm

Person 1: ummm
Person 2: oh ok

Ummm by CokeSucker123 October 27, 2019