Mamma Hogg is a character who resides in Strangetown in The Sims 2. She first appears after you help to clean up the hotel and arrives with Honest Jackson. As a resident, she can't be checked into the hotel, but her son Dusty can. 

She is thought to be a well known figure of Strangetown and notable for being the owner of Mamma's Place

Her secret is that she has hot curlers plugged into a mini fusion at home.