<human>: So this happened about an hour ago.

I recently received [this shirt] from the reddit gifts secret santa and decided that i should wear it to the gym today, as it would be a bit of a laugh.

Getting to the gym, I start off with a quick 20 min spin cycle workout and move on to the weights, where I set up on the calf machine. I see that the weight already set on the machine is at 100+ kg and quickly change it to <60 kgs, as I didn't wanna pull anything.

That's pretty much where the fuck up begins.

So when I set up on said machine, I didn't notice that someone had already left their shirt and phone right next to it (which apparently is gym code for: Someones on this machine, gtfo) and ignorantly continued my workout. Out of no where, massive dude pops up right in front of me (who i later found out to be a national rugby player) and says "Hey, smartarse, you can see i'm working out here, right? You wanna work on this six pack of yours then you can head over there." He points to the direction of another group of machines. I apologize  profusely and leave the machine to head over to the ones he pointed out, wondering why he was being such a dick and also wondering why he specifically suggested a six pack workout.

That was when I remembered I wore that stupid fucking shirt.

Pretty much maximum embarrassment, left gym as soon as I worked it all out, shirt won't be worn to the gym again (sorry secret santa).

Can you give me a shortened version of the text?
<bot>: Went to the gym wearing a witty shirt, stole a rugby players machine, said rugby player goes to continue his workout to find me in his machine leaving me extremely embarrassed.