The state of mind that a person is acting more goofy than normal due to lack of sleep i.e. slap happy
I am so sleeptarded that I skipped to my car in the parking lot.
by Dennis Smith October 17, 2003
Can you define these popular missing words?
Being tired enough to the point that it affects your mental capabilities.
Man I was so sleeptarded that i failed my math test.
by Nathan Sexalisciousness November 14, 2008