granny pants 

Any pair of women's pants that are "uncool" because they look like something your mom or grandma would wear. This often includes "relaxed fit" jeans, jeans that taper down to the ankles, anything in a old-school floral pattern, anything TOO stretchy, etc.

1) I was wearing granny pants and some girl teased me in the hallway.

granny pants by andriod5 January 13, 2006

Granny pants 

In the UK, granny pants are particularly large women's underwear.
These are the sort of knickers that are featured in Bridget Jones' Diary.

"I ran out of thongs so I had to wear my granny pants today."

"It was so embarrassing. My trousers fell down and the whole world was staring at my granny pants."

Granny pants by EverybodyLovesABritishGirl May 23, 2008

grannypants

the definition of uncool pants.
usually baggy and old, the kind you wear for comfort and not for looks.
mostly grey as a result of bad washing, usually stretched with age and often seriously lacking elastic.
pants that i would be devastated to be caught wearing in the throws of fondling.

'my god those are one hella grannypants she got hanging out there!'

grannypants by shmurgally <3 December 9, 2008

Grantypants 

A grantypants is a male slut and someone who allows anyone into their pants.l and grants anyone and anything access into their pants.

He's such a "grantypants" .

Male slut "grantypants" Webb!!!

Grantypants by nighthawlk89 June 29, 2020