A liquor made distilled from fermented agave. Gullible people buy it with a worm in the bottle or they buy Patron.
Tequilla is mostly used in shots, margaritas, and tequilla sunrises. If you're trying to lessen the experience of the shot, the correct order is salt lick, tequilla shot, lime bite.
For some reason or other, it has a reputation for causing excessive drunkenness. Probably due to psychological effects.
A: This tequilla tastes like how rubber cement smells.
B: Then maybe you should stop sipping it - it's not a sipping liquor!