1 definition by F I N N ! (:
A conjunction of the words 'Slap' and 'Happy'. Normally used together, meaning uncontrollably hyper, and having random outbursts of laughter. You normally pee yourself when your in this mood, and it occurs a lot before you retire to your bed. Meaning, if you get 'slappy', you will crash in approximately 10 minutes.
Homie #1: *laugh laugh laugh. laugh laugh laugh laugh luagh. LAUGH LAUGH LAUGH.* HEY! Did you see that squirrel? Wow, that guy is wearing pink pajamas... Do you do The Twist with your heel or toe? I wonder what really is at the end of a rainbow...
Homie #2: Wow homie, your slappy as all get out.
Homie #2: Wow homie, your slappy as all get out.
by F I N N ! (: April 24, 2011