(Noun, verb). An extended drinking session by which the drinker maintains a steady state of inebriation without ever getting drunk. (verb: to Hagman). Named in honor of late actor Larry Hagman.
(note: daily or even weekly Hagmanning is not recommended. See Larry Hagman's ex-liver.)
"Plan for a Hagman on Thanksgiving!"
"If we are Hagmanning on Thanksgiving, we'd better stock up."