1) The worst possible thing to say during sexual intercourse or any other intimate situation.

2) The best possible thing to say when maliciously scattering your dead elder's body parts at three in the afternoon in a children's playground.
1) Self explanitory; vivid, vomit inducing visual.

2) Self explanitory; vivid, necrophilia inducing visual.

"Happy birthday, Grandma!"
by LunarlightChronicles February 16, 2008
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When using a social network, choosing not to click the "Say Happy Birthday" link when it is one of your hundreds of friends' birthday.
Sally looked into the top right corner her facebook page and noticed her it was retired third grade home ec teacher's birthday. Having Not seen the lady for 23 years, she pulled a Happy Birthday Ignore by not clicking the "Say Happy Birthday" link.
by JacktheBrusselSprout August 1, 2011
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A phrased used to tell your best-girl "Happy Birthday".
Girl 1: Happy birthday bitch!

Birthday Girl: Thanks gurl, I'm gettin' fucked up tonight!
by L-Breezy March 14, 2007
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This is just a simple phrase you use in sticky situations, or when you're simply fed up with the person you are currently talking to so that the person is then confused.
Tom: You look like my foot

Mark: Understandable, Happy Birthday
by Tee_CounPoun August 22, 2019
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When it’s someone’s birthday it’s Colin birthday, everyday of the week is Colin birthday. Wish Colin happy birthday no matter what time and day of the year.
Happy birthday buddy...Happy birthday Colin
by Mr.Wrestling mark April 9, 2021
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When someone is your facebook friend but never posts or likes and you delete them on their birthday...
"Facebook birthday notifications "
I don't even remember adding that person...
unfriend
"Happy Birthday Felicia"
Bye Felicia
by JayWayne November 6, 2015
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On your girlfriend or wife's birthday, you buy her favorite birthday cake and feed it to her. About a half hour later, you have sex with her doggie-style, and while penetrating her vagina,you stick a ping-pong paddle, or other flat, round shaped object, into her anus. She then takes a dump that comes out in the shape of a cake. You flip her on her back, placing the "birthday cake" on her stomach, adding a lit candle or two. You then fuck her missionary style, and when you cum you ejaculate "frosting" all over the birthday cake, also extinguishing the lit candles. Happy Birthday, Sweetie!
Tonight I'm going to give my girlfriend The Happy Birthday Cake!
by lovemyelie March 9, 2011
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