Context: I recently went to a Steely Dan concert with my lady, and it reminded me of those crazy days back when we used to get in so much trouble. Times were so much simpler then. 
Speaker 1: I recently went to a Steely Dan concert with my lady.
Speaker 2: Oh you must have enjoyed it!!
Speaker 1: Yeah, it was awesome reminiscing about those times when we used to get in trouble back in the day... times were so much simpler then.
Speaker 2: Yeah indeed it must have been then