Manserve 

A boyfriend who serves their girlfriend as a Butler and is treated like total shit in their relationship.

Slang for Manservant

Geez man I can't believe you're a Manserve. I feel real bad for you.

Manserve by Bloop.... July 13, 2019

manservice 

Usually used to refer to Japanese animation named at adolescent girls; when a male character is naked or topless for no reason other than the enjoyment of the viewer or reader. Derived from 'fanservice'.

Fangirl #1: Did you read that one Naruto doujinshi?
Fangirl #2: You mean the one where Naruto and Sasuke got naked, and then they did it?
Fangirl #1: What excellent manservice!
Fangirl #2: I wholeheartedly concur. Now let us squeal annoyingly to celebrate this wonderful event.

manservice by Meghan Olsen September 22, 2008

manservant 

A chivalrous gentleman at your nonsexual service.

Where's my ManServant?

manservant by theladies August 9, 2016

Mantervention

an orchestrated attempt by one, or often many, guy friends to get someone to seek professional help with a girlfriend or wife. Manterventions have been used to address serious personal problems, including, but not limited to acting like the bitch in the relationship, relationship infidelity, and not acting manly.

All the men decided to have a mantervention when they found out Bob was getting cheated on by his fat wife.

Mantervention by Rodrim33 September 18, 2010

Sackward-facing manservant  

1. Someone who is filthy/unclean and is owned by a fellow person of the same sex, inwhich he has to there bidding unquestionably.

2. A general insult to people with no friends, impliying they take it up the chuffer.

Also 'Manservant' is not to be confused with 'Manslag', as a manservant has no sex with the opposite sex.

"Leon is a right Sackward-facing manservant ."

"Yeah he loves it up the shitter!"

Sackward-facing manservant by jakeBow56 February 7, 2009

Manservant 

A cock. Just a cock. Everyone knows this.

"Strange - your manservant is only six inches tall."

Manservant by Lost Cookie August 16, 2017

Manservant 

A character in the original Romeo and Juliet who was a main character and caused an affair between Benvolio and the Prince. Erased from the original to avoid people going back in time to hurt or maim Shakespeare.

Also used to describe someone who was the cause of an affair.

You cheated on me with her?? That manservant!!!! :(

Manservant by Benvolio January 7, 2006