Sugar MIL

MIL = Mother-In-Law.

A Sugar MIL is an affluent mother of someone who married a gold digger. They try to buy the love of their spongey offspring and children-in-law, which in turn actually creates conditional love and higher expectations for money from the Sugar MIL.

“How on earth are they going to afford to finish the renovations before the baby arrives?”

“They’ll be fine, Jane’s Sugar MIL will pay for it - she’s paid for everything else.”