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A time of high stress and work accompanied by equally intense social activities and overall debauchery, ie. work hard / play hard
"Back during Rob's heydey, he got wasted and walked on a bar after pulling a 16 hr day. Those were the days."

Friend: "Want to get drunk with my dad and hear him ramble about nuclear physics? He actually likes to dance when he drinks to like classic Indian bollywood pop songs, it's so awkward. He thinks he can sing too."
Me: "That's fucking hysterical, I don't know anyone that does that... does he hit on anyone in the bar and thinks he owns the place?"
Friend: "I dunno, maybe back in his heydey."
by One funny dude August 08, 2013
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