To bad eye something is to stare at it with great interest. To scope it out, look it over closely, check it out.
by Edword August 5, 2006
A blue eye that that Sans unleashes as some sort of last resort when he has a hard time defeating Frisk in the genocide route (uncanonically the eye is some sort of blue fireball)
by Molcancoolguy64 December 17, 2020