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!"
by T.Wilson January 1, 2013
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the conclusion to the "yo mama" conflicts:

bob- what did we have for homework today?
bill- yo mama
bob- yo daddy
bill- you slap happy pappy
erm...see above
by ninj4 March 23, 2004
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An offer you simply cannot refuse to give up.
"Want to go eat some shrimp at that one restaurant you like?"
"Well that sounds like a Slap-Happy Butt-Smackin' Deal, my good sir!"
by Cyrus9201 October 11, 2013
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happy slaps, happy slapping.

Slapping a random person (they can be on the bus, walking down the street, whatever) whilst recording the act with a video camera phone. It's a very unfortunate London phenomenon. Attackers are usually yoots (ghetto versions of chavs) thinking they are rudeboys. Victims are usually boys around the same age as the attackers, but it's not unknown for victims to be older, or even women. Sometimes the tables are turned, as there are videos going around where the attacker is happy slapped by the victim. More power to the victims, I say. The act is totally random, so be on the lookout for a group of pussified yoots pointing their camera phone (that their mum bought) at you.
I hope to God that one day a happy slap victim is a psycho and shanks the happy slapper in the face.

If you get happy slapped, grab the camera phone and smash it on the ground.
by hatehumanity November 30, 2004
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a euphemism for male masturbation, or more literally, slapping someone that is just too perky.
by chas bran October 10, 2016
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A stupid craze where the victim is attacked, and the incident recorded. Supposedly against the law, although lots of incidents are not brought to police attention. Is not always to random people, can be someone well known to the attacker, and the violence can be a form of revenge. Not always teenage boys-I was 13 when I was attacked by a girl a year younger.
I was filmed at school having food thrown at me and my friends and then me being slapped. The teacher whose attention it was brought to gave punishment for the violence, not for the happy slap. Through lying and crying, my attacker managed to spread the rumour that I was the attacker, and her the poor discrimated victim.
by techygirl August 15, 2006
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