To stimulate the mind by doing something productive while under the influence of marijuana.
Reading a book, watching a movie, trying out a new recipe while being high on marijuana falls under "Burn and Learn"
by Mr. Burnandlearn January 05, 2012
The act of smoking marijuana before going to class.
Brendan: Dude we're watching a movie tomorrow in chem, let's burn and learn!
by deasto February 08, 2010