Was he bragging to impress me?

There was a picture at this guy's (Yes I like him) work place and some old man was lifting a box in their warehouse. I forwarded it to my him and told him "i see you lifting that box" but then told him I was just joking (we joke around alot). Anyway, he responded back w/ "nice try. I'm wearing my black slacks and grey polo shirt today." After reading that I felt like that was him showing off or describing how good he looks. Was he bragging?
Was he bragging to impress me?
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