Slapping the hands together as though you are happy and high on life for what you are doing at the moment, or what you are planing to do in the near future.
I'm slap happy because we are going to Mc.Donalds. Mc.Donalds is a "Slap Happy " place.
Slap happy describes a guy who likes to jerk off A LOT - as in more than what is considered normal or healthy.
Dave: "Have you seen Bill around?" Bob, "No, I haven't seen Bill around in a long while - I heard he likes to stay in and slap his slap-stick around all day - I'm afraid he's gone slap happy!"
adj. (1) this word describes the state of someone who becomes somewhat giddy or abnormal in behavior as a result of being smacked around. It is thus synonymous with punch drunk.
(2) it has also been used to describe a person with a penchant or delight in hitting others, but this is certainly not a noun that refers to the state of happiness produced by the hitting.
You can tell that boxer was slap-happy in his post-fight interview.
That bitch, Jennifer, she sure is slap-happy. But I guess it's usually good when a girl hits you.