I recommend hitting your head on your bedhead as you throw yourself back into bed after turning off your morning alarm that is across the room as a way of staying awake. Truly efficacious.
Another effective way of waking up: Frantic neighbors banging on your door because there is a flood coming out from underneath your house. Freezing weather came out of nowhere this morning and busted a pipe at about 8am. Calls to landlords and plumbing companies ensued.
"We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary." — James D. Nicoll