Because they can only count to 3.
A light bulb weighs about 50g and a single ant can lift about.2g, so it takes somewhere around 250 ants working together.
Your ex!
Nuuks.
Using saxitoxin.
Santa stops at 3 Ho's (sorry if it's a re-post)
Because in charge Yoda was.
Counting Crows
Because of the Taliban (say it out loud)