courtesy (waiter laugh or bartender laugh) laugh 

when a waiter or bartender is working in a very loud bar or restaurant and cannot completely hear what the customer is saying but they start to laugh when they thought it was a time to insert laughter.
also known as a courtesy laugh when a customer says something at all remotely funny so you use the waiter laugh or bartender laugh to make the customer think they are funny.

I was table-side when the family was talking to me and I started using my "courtesy (waiter laugh or bartender laugh) laugh" when Mr. Young told the same story he has told 45 times previously.

courtesy (waiter laugh or bartender laugh) laugh by dakine mahalo December 2, 2009

zendaya laugh 

An act of laughing so hard at someone's jokes even if they aren't funny, often symbolizing some sort of infatuation for that someone.

It was first encountered on Jimmy Kimmel where Zendaya would go laugh extremely hard over Tom Holland's stories that haven't even gotten to the punchline yet.

I caught my self zendaya laughing at this show just because the main character is so hot.

zendaya laugh by mr. random user #24 September 12, 2021

The last laugh 

Getting payback to some person. Particularly a person that stabbed you, not literally, in the back.

"You may have just pranked me, but I will get the last laugh" Tom said just before he pranked Billy.

The last laugh by BETTASAREAWESOME November 14, 2013

pity laugh

a half-assed laugh that you give as a reaction to a stupid story or comment, pity laughs are usually used when the story or comment is ment to be funny but really isn't

*pity laugh* what a funny joke...

pity laugh by KJDrag1 March 2, 2008

Live Laugh Love 

A trite phrase shallow women stencil onto their bedroom walls after seeing a DIY segment on the Rachael Ray Show.

"My life has no true meaning so I'm going to latch onto the phrase Live Laugh Love and pretend that it validates our loveless marriage and under-achieving children - okay honey?"

Live Laugh Love by McPhd September 7, 2011

Laugh Raping 

When a person laughs way too long at another person, thus making the situation horrendously awkward for everyone.

That dumb broad in the corner keeps laugh raping my friend every time he tells a dead baby joke.

Laugh Raping by thatpersonyoudontknow January 29, 2010

The Alen Laugh

A laugh produced after stating a joke in order to drown out everyone's silence when said joke was lame. It's often used as a preemptive strategy to appear funnier than one actually is.

Alen proceeded to tell us a pun that made no sense and followed it up with the Alen Laugh. No one else was laughing.

The Alen Laugh by alensbestfriend September 21, 2015