My girlfriend of 4 years has just "Co Signed" on 2 car loans for her family who has just filed bankruptcy. One was to keep the family construction business running (Truck) & the other was so her 20 year old brother can keep his "I'm Cool" status in life (Nissan Z3) due to the relentless pressure from her " Insanely Controlling Parents " who now can not provide for their children financially & have burdened their 24 year old daughter with being the "CFO" of the family.
Yes, she still lives at home 
At my estimation the loans are at a combined total of about $60,000
She makes less than $10.00 an hour at her job
& has been an approved co-signer for 2 loans in less than 6 months time. It's obvious she has a decent credit rating. I guess what I don't understand is how lenders approve someone who makes less than $10.00 an hour as a co-signer for loans totaling $60,000