Other slang terms are muff, snatch, twat, and crotch. Sovtek released versions of the Electro-Harmonix Big Muff and Small Stone pedals. Mama Bear is Mammy Muff, and Baby Bear is called Tiny. Electro-Harmonix produced only 100 Mogwai Big Muff pedals. The Bass Big Muff replaced the Russian version. He also uses an MXR Micro Amp and custom Electro-Harmonix Big Muff Distortion/Sustainer. She finds a roommate, Muff Bull Dagger, on Craigslist after Lip declines. There also exists a customized limited edition Big Muff, called the Mogwai Big Muff. This version included an onboard compressor in addition to the standard Big Muff features. Several variations of the Big Muff Pi followed throughout the 1970s. Decicco used the Delay Modeler Line 6 and Big Muff effects units. Under American rules a fumble may be confused with a muff. The bottom of the muff is also frilled. The album was produced by Muff Winwood, and engineered by Rhett Davies. He was subsequently murdered by Injun Joe, who framed Muff Potter for the crime.