What is Re-high?
1.
When you get high with one group of friends, then after they have time to come down, you go get high with another group of friends.
"Man, are you high anymore?" "Cuz i'm not."
"Naw, i'm re-high."
See
2.
When you smoke a bowl the day after you were really high, and get higher than you should off that one bowl.
"How are you so high off of one bowl?"
"It's a re-high off of last night's five bongs."
See