Echolocation 

Finding your spouse's lips in complete darkness of a bedroom after making kissing sounds.

Echolocation is a known phenomenon by which bats identify their prey

Echolocation by Nika123 October 7, 2012

Echolocation Kink 

When you are sexually attracted to the noise that bats, dolphins and whales make.

Dolphin: EEEEE eee-Ee-Eeeeeee-eee
Me(with Echolocation Kink): Damn shawty ok !!

Echolocation Kink by acertaz3r May 6, 2021

Asian-echolocation 

The ability of an Asian to sense a fellow Asian.

Due to Asian-echolocation, she knew her Asian friend had entered the room.

Asian-echolocation by banny bebez May 30, 2018

Nerd Echolocation 

The process used to locate a nerd within a reasonable proximity by sending a text, email or other type of social media message. The sound alert you hear is almost always associated with a video game sound or music. This is most effective in a home or office setting.

"Hey do you know where Matt is?"

"I not sure. Have you tried Nerd Echolocation yet?"

"Let me see here. I will sent him a text and tweet" click click click

"Oh, he is in the break room. I just heard the Mario 1-UP sound and Legend of Zelda theme song come from that direction."

Nerd Echolocation by azmike80 February 14, 2013

echobrocation 

Echobrocation is a fine tuned sonic ability that fraternity brothers seem to adaptively gain once they are well established in their respective brotherhood. In party settings, the frat males environmental niche, one brother will yell out a short nonsensical phrase that other fraternity members are sensitive to, and upon hearing, will repeat until all others have joined in. The reflected verbal phrasing is essential for pinpointing other bros locations in the hot, dark, hostile environment that is a frat party.

Classic example of echobrocation at a party:

Joey (yelling after hitting last cup): wattttaaayaaaaagottt !!
...

Chad( Loudly, from next room): wattawattayagottt!!!

Randall (From upstairs): waaaaaaaatayagotttt sonnn!!!!

echobrocation by boners mcgee February 15, 2010

Ebrolocation 

Similar to echolocation, however it's the method for white teenage boys to locate their friends while not within sight of each other.

BTW, this ACTUALLY happened, and is the source of this UD entry:

Biff: "Dude, where's Chad?"
Skeeter: "Dude, I think he was over in the Walmart shoe aisle looking for Shaqs"
Chad (heard faintly from across the store): "DUDE!"
Biff: "DUDE!" (moving toward the sound of his bro)
Chad: "DUDE!" (responding to the sound of his bro)
Biff: "DUDE!" (nearer to Chad)
Chad: "DUDE!! THEY'VE GOT SHAQS!"
Biff: "DUDE! NO WAY!!!"
My daughter: "Douchebags find each other using ebrolocation"

Ebrolocation by T3chTon1c February 5, 2019

Echofication 

(1)The process of taking something that should, by all means be simple, and making it extremely convoluted and difficult. (2)Screwing over a large group of people who have no choice but to follow your command.

"We had to go sign some papers, but due to echofication, it ended up taking twelve hours and three trips back and forth"

Echofication by dis0311led February 19, 2010