It means one is still unfamiliar but has a general idea of how it works.
Originates from the term “Hugging the UP (Union Pacific)”. In the early 20th century when navigation for aircraft was in its infancy, pilots who were lost would zig zag until they found Union Pacific’s transcontinental line and follow it until they got to a spot they were familiar with. They hugged the UP.
“I’m still hugging up with the concept, but I’ll understand it soon.”
Going a bit further than regular hugging. May include lying down together, being very close, kissing (but never on the mouth) and over the pants groping.
All still very platonic.
Him: What were you doing with that guy? What happened?
Her: Nothing happened! We didn't have sex or even kiss! It was advanced hugging at best.
Hug your boyfriend week is the last week of February! So for the last 7 days of February, you have to hug your boyfriend at least once each day that you see him.
Hey! It’s hug your boyfriend week, so now you have to hug him at least once each day all week
Hug someone this day! On april 12th, it's national hug day!
Hug your best friends on NATIONAL HUG DAY!
On august 14 give someone you just met a hug
National hug day
A day to hug any one on the 10th of November
Yo my guy it’s national hug day
On the 4th of November hug people
Yo my guy it’s national hug day