claim: Levoamphetamine improves the ability to stay conscious and awake.
evidence: Mrs. Grouch is the mother of Oscar the Grouch in the long-running American children 's television series Sesame Street -LRB- 1969 -- -RRB- .. Sesame Street. Sesame Street ( fictional location ). Grouch. Grouches. Oscar the Grouch. Oscar the Grouch. Mrs. Grouch has visited Sesame Street various times over the years , including in episode 3141 , to make sure that her son is still Grouchy , and has n't been turned nice .. Sesame Street. Sesame Street ( fictional location ). Grouch. Grouches. That same year , she also appeared in the special Sesame Street Stays Up Late !. Sesame Street. Sesame Street ( fictional location ). , communicating by telephone with Oscar and other relatives .. In a later visit to Sesame Street , she was performed by Leslie Carrara-Rudolph .. Sesame Street. Sesame Street ( fictional location ). Leslie Carrara-Rudolph. Leslie Carrara-Rudolph. After she arrives in that episode , she & Oscar greet each other in a very normal Grouchy way -LRB- Oscar  : `` Rotten to see ya , Ma . ''. Mrs. Grouch  : `` Ah , rotten to see you too , son .. Grouch. Grouches. Heh heh heh ! '' -RRB-. , which is how Grouch families tell each other that they really are happy to see each other .. Grouch. Grouches. Mrs. Grouch lives in Illinois .. Grouch. Grouches. Illinois. Illinois. Oscar remembers her gift of a tattered sneaker to him as a baby fondly enough to sing about it in his signature song , `` I Love Trash '' .. sneaker. Sneakers ( footwear ). I Love Trash. I Love Trash. Her name is mentioned in Sesame Street Magazine issue 249 -LRB- November 1995 -RRB- .. Sesame Street. Sesame Street ( fictional location ). Sesame Street Magazine. Sesame Street Magazine. According to an interview on Q , Oscar explained that his father is from Saint David Ridge , New Brunswick , and that his mother grew up in Nova Scotia .. Q ( radio show ). Saint David Ridge. Saint David Ridge, New Brunswick. New Brunswick. New Brunswick. Nova Scotia. Nova Scotia. Saint David Ridge is a rural community near Moores Mills , New Brunswick , which was also mentioned in the appearance .. Saint David Ridge. Saint David Ridge, New Brunswick. New Brunswick. New Brunswick. rural community. rural community. However , these are actually the respective hometowns of the parents of Caroll Spinney , performer of Oscar the Grouch , Mrs. Grouch 's son .. Grouch. Grouches. Oscar the Grouch. Oscar the Grouch. hometowns. :wikt :hometown. Caroll Spinney. Caroll Spinney. A running gag between Mrs. Grouch and Oscar is that whenever Oscar would say `` please , '' she would wash his mouth out with vanilla ice cream .. Grouch. Grouches. vanilla. vanilla ice cream. ice cream. ice cream