Bobby peered out from under the bed, waiting for the perfect moment to jump out and scare Hank. The blue furred medic was wandering about his labs, writing things down and measuring test results.
Once Hank was close enough, Bobby reached out and grabbed Hank's ankles, and encased them in ice.
Hank let out a shriek of surprise and Bobby crawled out from under the bed, chuckling hysterically.
"April Fools!"