"Bug someone" IS slang - it means to bother or annoy someone. You could also say pester someone or nag someone.
To bug someone means to bother or annoy them. "Quit bugging me!" means "stop doing that." This is an older slang term, but you can still hear it in casual conversation. The image is of a bug crawling all over you, driving you to distraction.
Chi Chi can be Jamaican slang for a gay person, or it can be Spanish slang for breasts, or it can be Japanese slang for Daddy. I cannot find the phrase "chi chi bug" anywhere with my search engine, so perhaps you heard it incorrectly or the person used it incorrectly.
rachet in slang means ugly, as in someone's appearance.
C-o-o-t-i-e is the correct spelling for the term "cootie."
to irritate or bother someone.
Give someone a "crack"
Puma in American slang is someone who is 30-40 dating someone who's around the age of 20.
"Ditzy" is a common slang term used to describe someone who is silly or scatterbrained.
insectmicroorganism (bacteria)virus(slang) mentally ill person who displays erratic behavior
If you are referring to living things on the moon - it is possible. Bacteria has indeed been found in space. Moon bug is also a slang term meaning "lunatic" or "crazy".
It is a slang term that means to be deserted by someone.
get the sack