This happened on my birthday in 1984 - I had gotten out of the Navy 18 months earlier, had gotten married in December, 1983, and finally had gotten a low-paying job in a town 25 miles away. (By low-paying, I mean I was making $3.50 an hour). Anyway, I got a call from work by my (now ex-)wife, saying that her sister was in jail for shoplifting and needed $100 in bail money. Yes, I was being tapped for a loan on my birthday. Being a newlywed and wanting to be an upright guy, I agreed, even though my weekly pay was $160. What galled me at the time was that their brother worked a very well-paying job at the time, but they wouldn't ask him. I don't know exactly why, but I have my suspicions.
Needless to say, I've never seen any dime of it back. I haven't spoken to ex-sister-in-law in at least a decade, and hope never to ever see her again.