At work or at a party, your friend is describing someone and you can see they're completely hooked.

'Kiffer' (slang) means to really like or enjoy something. 'Être en kiff total sur quelqu'un' means being very attracted, having a huge crush, sometimes to the point of being a bit obvious. Informal register, more young-adult, very oral.

"Être en kiff total sur quelqu'un" does not mean to be furious with someone, to be bored by someone, to be wary of someone. It specifically means "To be totally into someone".

You show someone a quick fix on their phone settings and wrap it up like it's no big deal.

Literally "Bob is your uncle," as if you're stating a random family fact.
In practice it means "there you go," "and that's it," or "problem solved," usually after giving simple steps. It's very British and often said cheerfully when something turns out easy. The exact origin is debated, but it's commonly linked (maybe loosely) to 19th-century British politics and a nepotism joke.

"Bob's your uncle" does not mean a family introduction, a warning message, don't forget what i told you. It specifically means "And there you have it; the task is complete".