"i was lik, wow, onli 5$?! buh later i foun out it was jus pencil shavings"

I've been jabbed

A pencil is a slang word for penis.
A pencil sharpener is a slang word for vagina.
Pencil shavings is a slang word for cum.

e.g When a man and a woman have sex, the man sticks his pencil into the woman's pencil sharpener and they have sex. After a while, pencil shavings explode out of the pencil and into the pencil sharpener.

Example:
Abbie: Did you guys know that vaccines cause autism?
Jake: You do realise that's completely wrong right? There are studies to prove it you absolute pencil shaving