Seilo 

Seilo is a name used for very short people.

If you see a Seilo, be sure to call him short.

Ohh look at that midget, I bet his name is Seilo

Seilo by Jorma22 October 19, 2020

Seilo 

Alternate title for millimeter, named after the size of a certain Seilo's reproductive organ. The use of the word Seilo began in 2004 when a small, short and skinny boy was born. He was hated by everyone in his early childhood and he had a hard time making friends in kinder garden.

When he was 6 he was accepted to special-ed school. At the special-ed school around the age of 16 the doctors realized his puberty was not starting any time soon and they had to start an testosterone treatment but they actually mixed up the testosterone with estrogen after 2 moths of treatment he started growing breasts and his reproductive organ started to withdraw. After 3 of treatment it was already too late and his parents started to notice some odd behavior like not being able to ride his motorcycle at all and always complaining about his not getting paid enough even thought he wasn't working. His parents took him to the doctor, but Seilo was complaining the whole way there about his dads driving and calling him a "virgin" because Seilo hadn't learned yet how babies are made.

The doctors could not help since he already looked like a childish woman and the doctors also said he has a "3 inch shrimp dick" after this the word Seilo began to spread around Europe and now it's a popular insult in over 46 countries.

Nowadays it's not certain knowledge if this Seilo person ever existed but you can find an exact replica of him in a game called "Genshin Impact" and the characters name is "Venti".

Girl No.1: Omg pulled out his dick and it was an absolute seilo.
Gay Friend: Omg No way even though he's so handsome.
Girl No.2: It can't be that bad.
Girl No.1: *Shows a picture of boys penis*
Girl No.2 And Gay Friend: HOLY SHIT THAT IS A SEILO.

Seilo by Chad Dick Dickinson's October 21, 2020

birthing a sailor 

The act of a U.S. Marine sitting on the toilet and delivering a large 'deuece' aka BM. While the term has never been fully embraced by the Navy, it persist nonetheless.

George to John, "where the fuck have you been" ? John replies, "Oh man, I was 'giving birthing a sailor," George sardonically replies, "I hope the little fella did not require an episiotomy."

birthing a sailor by LaughingAloud April 14, 2010

Seiso 

清楚 or せいそ
Meaning clean, tidy in Japanese.

Have been adopted by VTubers to mean Wholesome. Seems to be used ironically in many instances.

"She's a psychopath!"

"What do you mean? She's totally seiso!"

Seiso by Notayler September 12, 2020

drunken sailor 

What shall we do with him?

What shall we do with a drunken sailor?

drunken sailor by Verdigris June 15, 2016

Seiso 

A Japanese word which describes someone with a pure and clean image. This word would typically be used to portray the ideal Japanese beauty or an idol. Seiso can also imply a sense of wholesomeness.

Matsuri can be really seiso at times even though she’s a lolicon...

Nyanners is totally seiso, she is the most pure angel ever who would never ever steal your wife!

Seiso by Cruby September 14, 2020

hey sailor 

Hey Sailor is a gay catcall indicating the caller is prowling for quick gay street sex.

Boys, just wear assless chaps down Castro Street yelling "HEY SAILOR" and the hunks will come to you!

hey sailor by I, Wreckerrr October 14, 2016