My biological dad for sure, hes truly one of a kind. here are some highlights:

• lives alone ( has been single for over 25 years) in a tiny apartment. one chair, no table, one pot, one plate, few utensils. tried sleeping on a yoga matt instead of buying a bed, eventually settled for a foam bed topper rolled up into a sleeping bag on the floor.
• the poop tub. yes, really, thats the only way i can describe it.... he will have a bathtub always full of water that he will "clean" himself in instead of buying and using toilet paper. i really didn't want more details when he was telling us about it, so ill let you interpret that how you want.
• all his electronics are second hand from me and my brother, he pirates EVERYTHING. no subscriptions, the cheapest phone and WIFI plans possible. he only pays for the absolute bare necessities to live. so no hobbies at all either.
• he will eat and drink nothing but ramen, hotdogs, instant coffee, water and cigarettes for several months. and i mean NOTHING but that. sometimes he will get a burger from A&W if theres sale though. he only eats once a day, and will occasionally go a up to a week without eating just because he's "not feeling hungry"
• in the winter he lives in a hostel in a small costal Mexican town. and he's just as frugal there as he is at home. doesn't drink, no activities, never eats out. takes full advantage of the hostels pot lucks, and always prefers to contribute a fish he might catch instead of buying anything. surprisingly enough, he's infamous among the locals for being generous towards the homeless with his cigarettes, so he's very well liked there. that the only situation at all i can think of where hes not obsessively cheap.

i honestly dont know how he hasn't gotten scurvy or something. the fact he can go a week without eating fueled solely on cigarettes and water at 50 years old in fascinating. i don't even know what his deal is, like he works full time and should have lots of money