“Party hearty”

“Party hearty!” means to celebrate with great enthusiasm. “Make your party hearty” was in a 1973 print advertisement for Jeno’s Pizza Rolls; “We Party Hearty” was cited in print in 1975. The term “party hearty” has appeared frequently in print since the mid-1970s and was popularized by its use in several songs.
 
Other “party” phrases include “party down” and “party on.”
 
 
Dictionary.com
party hearty definition
and party down
in.
to have a great time; to celebrate.
 
3 October 1973, The Times (San Mateo, CA), pg. 19, col. 1 ad:
When it’s party time, it’s Jeno’s time. Make your party hearty with Jeno’s Pizza Rolls.
 
26 December 1975, The Times (San Mateo, CA), pg. 13, col. 1 ad:
BOGART’S
We Party Hearty
Gala Christmas Eve & New Year’s Eve Parties!
 
13 January 1976, The Times Picayune (New Orleans, LA), sec. 4, pg. 11, col. 4 classified ad:
PARTY HEARTY!
(The Harbour—ed.)
 
OCLC WorldCat record
We party hearty ; (Every time I turn around) Back in love again
Author: L.T.D. (Musical group)
Publisher: Beverly Hills, Calif. : A&M, 1977.
Edition/Format:   Music LP : 45 rpm : English
 
OCLC WorldCat record
Party hearty
Author: Bob Florence; Bob Florence Big Band.
Publisher: New York : Hampshire House Pub. Co. ; Los Angeles : Las Palmas Music, ©1981.
Edition/Format:   Musical score : English
 
OCLC WorldCat record
Party hearty van man.
Author: Demcomics.
Publisher: York, PA : Demcomics, 1985-
Edition/Format:   Journal, magazine : Periodical : English
   
OCLC WorldCat record
Music from Do the right thing
Publisher: Universal City, Calif. : Motown, 1989.
Edition/Format:   Music CD : CD audio : Motion picture music : Multiple forms : Popular music : Rock music : English
Contents:
Party hearty / William “JuJu” House, Kent Wood (EU) (4:40)
 
OCLC WorldCat record
LET THE GOOD TIMES ROLL - Party hearty in Louisiana! Join a Mardi Gras parade where kids rule.
Publisher: [Washington, National Geographic Society]
Edition/Format:   Article : English
Publication: National geographic world. no. 270, (1998): 28
Database: ArticleFirst
 
OCLC WorldCat record
Party hearty : hot, sexy, have-a-blast food & fun all year round
Author: Marilu Henner; Lorin Henner
Publisher: New York : ReganBooks, 2003.
Edition/Format:   Book : English : 1st pbk. ed
Summary:
Offers healthy alternative ways to prepare food during the holidays, presenting nutritious meal ideas and recipe suggestions for special occasions and holidays throughout the year.