An activity whereby you see how far you can let a ‘stool’ slip out and still be able to suck it back in.
"General! Sir! Tombstoning complete. I just successfully retracted 2 inches of loaf."
or
"Your Excellency has the air of a man mid-tombstoning."
or
"Your Excellency has the air of a man mid-tombstoning."
by Bontempi June 27, 2007