2. it is said when someone tells a lie
3. it is used when someone says something to suck-up
4. it is said when you literally see bull poo
5. a term used when you have to speak or write for a certain length and you have nothing better to say.
2. "the sky is green"
3. "OMG, your dress is the prettiest thing i've ever seen"
4. I see bullshit on the ground
5. I can't write a 5 page essay on why 1 + 1 = 2. Therefore, I'll BS my way through