Some Mothers Do 'Ave 'Em recurring catchphrases include references to "a bit of trouble", which usually implies some sort of undisclosed digestive disorder, and to the cat having "done a whoopsie" (presumably a euphemism for having defecated in an inappropriate place, on one occasion in Spencer's beret). If Frank is pleased (or confused) about something, he will often use the catchphrase "Mmmm — nice!" or "Ohhh — nice!" Despite his unfailing ability to infuriate people, Frank is essentially a very sympathetic character, who inspires much affection from his ever-loving and patient wife, Betty. He also venerates the memory of his late mother, Jessica, and worships
Spencer Trethewy prison. This was reduced due to some successful appeals to eleven months. In 2007 Trethewy, having changed his name by deed poll in 1998, taking his mothers maiden name, Spencer Day, emerged as the owner and manager of Combined Counties Football League club Chertsey Town where has invested heavily in the club including kitting out their 22 sides, ground improvements and substantial playing squad investment. Day is reported by The Non-League Paper to have built a substantial company finance investment business holding (managing partner of HH Finance) in the last fifteen years which specializes in residential and commercial holdings worldwide.