slap-happy-grand-pappy 

an older person who is very happy about life & the things around him.

Brian: "Damn Carl, I only had 2 pieces of chicken out of that 12 piece family box last evening!", "you're such a pig!"

Carl: "Yo slap-happy-grand-pappy!"

slap-happy-grand-pappy by T.Wilson January 1, 2013

Slap Happy Grand Pappy 

An old man that loves to slap during sex.

(From Diary of a Wimpy Kid)

Jared: Oh, man. My dad's a Slap Happy Grand Pappy
Mike: Sorry to hear that.

Slap Happy Grand Pappy by SeevaGooner March 28, 2023

slap happy grandpappy 

in a forced alliance of marriage with your big fat granny.
unfunny at times but elitist humor

oc ; greg heffely, wimpy kid series.

1: whos those boomers there!!!!
2: your big fat granny with yur slap happy grandpappy

slap happy grandpappy by yourswagindiegf November 26, 2021

Your Slaphappy Grandpappy 

A term made up by the 'Diary of a Wimpy Kid' used asa 'Your Mom' joke.

Substitute teacher: Greg, can you answer this problem?
Greg: Your Mama!
Subsitute tecaher: Excuse Me?
Greg: Your Big Fanny Granny!
Subsititute Teacher: Well I hardly think that's -
Greg: Your Slaphappy Grandpappy!

Your Slaphappy Grandpappy by middle_school_'lOsEr' December 30, 2009