A Moishe is someone who is constantly moist.

An eternal hell hole used to test your mental sanity breaking point.

A person who I refer to as a bitch

Hug all the homies

As Alex (or Alexander/Alexandra) is a given name to many great people, it is natural to pass their shining onto other parts of life. Alex-whoop is to use to express a great achievement or joy/pleasure which is more intense than a normal whoop can cover.
The expressing person or others involved do not have to be named Alex/Alexander/Alexandra.

Throws fridge baskets at younger brother and is a meat eater (ie takes chunks out of brothers bicep) but only after punching him