Little Thu 

Little Thu is so small, her friends always laughs at how small she is. She always wants to be taller than her friends. But, no she can't become taller than her friends. She always get tease at her height.

Little Thu- A small little ant or a small person who you looks down at it.

Little Thu by Loverwolf20055 June 10, 2019

Little thumper 

A nick name for a man with a small penis and fast in the bedroom

:hey where were you last night

:I was out sleeping with little thumper last night

Little thumper by Dan the car guy November 5, 2021

Little Wet Thumb 

While riding your partner doggy style, stick your thumb in your mouth to get it wet, then stick it in her ass. It's like strapping your one hand to the saddle while riding a bull, so don't forget to hold your other hand up and wave it around....

It was all I could to not get bucked off after I popped my Little Wet Thumb up my wife's ass as I did her doggy style

Little Wet Thumb by silicone sister July 12, 2010

r/littlethirteen 

An unknown reddit subforum that nobody can visit it. Probably it was all about child pornography.

Person 1: do you know what does r/littlethirteen reddit subforum for? i've been looking for a memes and found it.
Person 2: that weirdly sounds like a child pornography.
Person 1: kinda doubted about it. can you visit it?
Person 2: it says it is empty. maybe the owner deleted everything about it.

r/littlethirteen by AlphaBread December 9, 2018