parklife · noun1
park + life. Almost unattested prior to the 1994 Blur single "Parklife".
Parklife · interjection2
From the 1994 Blur single "Parklife", which features a narrator speaking verbosely about his daily routine at the park, interrupted by regular shouts of "Parklife!". Popularized as a general interjection in 2014 in a Twitter meme comparing the supposed similarities between "Parklife"'s narration and the speaking style of Russell Brand.
Etymology from Wiktionary, CC BY-SA 4.0.