In political terms, to emphasize an ethnic/foreign-sounding name (or part of a name) of a person of color as a racial dog whistle.
The term comes from President Barack Obama's middle name, "Hussein", which was emphasized by conservatives in an effort to paint Obama as a secret/radical Muslim or simply "foreign", despite him being born and raised as a Christian in the US.
Donald Trump is really starting to get desperate, he is Husseining Kamala Harris!
A lot of conservatives tried to Hussein Nikki Haley by mentioning her birth name, Nimarata.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"