Mona is a 3 year old retard. She is always high on acid and weed.

If she breathes she's a thot

She was the result of a failed abortion because her dad's condom broke. One day, Mona's parents died in a violent car crash (as depicted in the intro), which made Mona mentally retarded. She now lives with her crackhead grandma, who also happens to be a sex offender. 

What Nana doesn't want you to know

Nana just wants to smoke weed, so she spikes Mona's food with LSD and Cannabis to get her to shut the fuck up and stay outside. She also owns a deformed, necrophillic doggo named Wusser.