by xXx_YourDad_xXx February 3, 2020

Your mom is the first defense is sixth grade boy humor, it’s constantly overused and makes you question the sanity of society as a whole. Your mom is also commonly used by lesbians with no humor and are trying to be funny, yeah I’m talking to you.
Example 1
6th grade boy 1: guess who I did last night
6th grade boy 2: who?
6th grade boy 1: YOUR MOM!!! OOOOOOH
Random kid passing by: wtf?!
Example 2
Random person: hey wanna hang tonight
Lesbian with no humor: sorry can’t tonight I’m busy doing…
Random person: busy doing what?
Lesbian with no humor: YOUR MOM!! OOOOOH!!!
Random kid passing by: How do I keep hearing these conversations?!
6th grade boy 1: guess who I did last night
6th grade boy 2: who?
6th grade boy 1: YOUR MOM!!! OOOOOOH
Random kid passing by: wtf?!
Example 2
Random person: hey wanna hang tonight
Lesbian with no humor: sorry can’t tonight I’m busy doing…
Random person: busy doing what?
Lesbian with no humor: YOUR MOM!! OOOOOH!!!
Random kid passing by: How do I keep hearing these conversations?!
by Littlegaykid February 18, 2022

A maternal insult (also referred to as a "yo mama" joke) is a reference to a person's mother through the use of phrases such as "your mother" or other regional variants, frequently used to insult the target by way of their mother.
"Your Mom is so fat when she got on the scale it said, I need your weight not your phone number." Alec joked.
by TheRealQuenCrew March 7, 2019
