Sunday Boy

A person who only shows up to an event or occasion every so often and not all the time.

Its name derives from people who only go to church on Sunday and not on other days on the church calendar.
Guy 1 - Where's John? We haven't hung out with him in ages.
Guy 2 - He's just a Sunday Boy, forget about him.
by JohnSmithLad August 05, 2011
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uncle sunday

1. A sinister uncle/close family friend, think of an uncle buck type character, only instead of late 80's hijincks, he brings inapropraite touching and the need for years of therepy as an adult.

2. A sleazy fat man with predilections that ensure he will be found on the sex offenders register.

3. A dull episode of Gunsmoke from around 1955.
Yo dawg, my uncle sunday came over and he gave me a sip of his beer. I don't remember what happened next but when I woke up my clothes were inside out.
by faust2501 August 09, 2018
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Sunday Worst

Opposite of Sunday best. Due to excessive drinking the Saturday night before, you look like and feel like total shit while attending church on Sunday.
Dude, did you go out drinking last night? You have your Sunday worst on.
by GoochFace March 28, 2016
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Only on Sundays

1. A retort when someone insults you or says something about judgemental about you.

2. A random way to trigger confusingly awkward situations.
1. “You’re gay.” Reply: “Only on Sundays.”
2. “Hey, you heard that Elon Musk bought Twitter?” Reply: “Only on Sundays.”
by mysteriouslyconfused May 12, 2022
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Senior Sunday

That day when all the senior girls in your high school post cute pictures of themselves, causing you to masturbate violently.
Senior Sunday would be really nice if I had a girlfriend.
by Christina Phillips November 12, 2019
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sunday boyfriend

The name used for a one night stand when the person hangs on in the house the next day. Could also be a sunday girlfriend.
Johm: "Who's that guy in the sitting room?"

Karl: "Oh thats Kate's latest sunday boyfriend, she was out drinking last night."

John: "Oh right, what a slag!"
by Derminator February 08, 2009
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