system
A chat on subreddit /r/NoStupidQuestions
human
I mean there's some odd days in winter when I skip a shower since my skin is kind of dry and I haven't moved/left the house all day so I'm not particularly dirty. So on those days I might not change my underwear since I don't think about it.

But it'd feel weird not putting on a fresh pair after a shower.
gpt
This is what I was thinking when I first read the title. I was like, do people take a shower then put the used underwear back on? :S

Then I started thinking it might be kinda like me. On my days off from work I wont change clothes cause I am at home inside. After a day or two I usually shower and put on fresh clothes but I can easily go 2 days a week not changing my clothes cause I am off from work and stuck inside. 

"Hmm time for a shower im starting to stink, ahh that's better, now better put this used pair of underwear back on" :S lol

Edit: Since I guess im not being clear enough. After a shower I put on fresh "clothes" as in everything. Underwear, shorts, t-shirt etc. Thus the joke about people putting on used underwear after just taking a shower and getting all clean makes it kinda pointless to put something dirty back on. :S 

Since clothes usually refers to everything. Otherwise if you weren't wearing clothes you would be considered "naked".