井 well

Push JOE Stalin down the well.

it looks like tic-tac-toe, so you can say, "I play tic-tac-toe in the bottom of the well while waiting to be rescued."

a well ★☆☆☆☆ FP
井 (well) + 戸 (door) = 井戸 (a well)

ceiling ★☆☆☆☆ KUNKUN
天 (heaven) + 井 (well) = 天井 (ceiling)