Lenergic
Similar to "slompy", lenergic is a state of tiredness often induced by boredom. This boredom somehow leads to a feeling of having energy, but at the same time being unable to complete any meaningful task. Lenergic feelings can be developed over long periods of procrastination.

Can be caused by lack of sleep, a heavy workload, procrastination, sugar, orange juice and/or energy drinks.
"I'm just feeling too lenergic to finish my homework tonight. I'll just do it tomorrow."