<sod>"420" was viewed by 7.40 million viewers on its original airdate, receiving a rating of 4.3/6 in Nielsen ratings.<ref name=Ratings>{{cite web|url=http://www.zap2it.com/tv/ratings/zap-tv-ratings-041909,0,5300310.story|title=TV Ratings: CBS, 'Desperate Housewives' are Sunday best|publisher=[[Zap2it]]|accessdate=April 27, 2009|date=April 20, 2009| archiveurl= https://web.archive.org/web/20090423045808/http://www.zap2it.com/tv/ratings/zap-tv-ratings-041909,0,5300310.story| archivedate= April 23, 2009 <!--DASHBot-->| deadurl= no}}</ref> The character Brian was awarded the 2009 Stoner of the Year award by the magazine ''[[High Times]]'' due to this episode, marking the first time an animated character received the honor.<ref>{{cite web|url=http://hightimes.com/entertainment/ht_admin/6089|title=The 2009 HIGH TIMES Stony Awards|date=December 31, 2009|accessdate=January 2, 2010|first1=Steven|last1=Hager|first2=Natasha|last2=Lewin|work=[[High Times]]| archiveurl= https://web.archive.org/web/20100107123519/http://hightimes.com/entertainment/ht_admin/6089| archivedate= January 7, 2010 <!--DASHBot-->| deadurl= no}}</ref><eod>
<sod>"420" was viewed by 7.40 million viewers on its original airdate, receiving a rating of 4.3/6 in Nielsen ratings.<ref name=Ratings>{{cite web|url=http://www.zap2it.com/tv/ratings/zap-tv-ratings-041909,0,5300310.story |title=TV Ratings: CBS, 'Desperate Housewives' are Sunday best |publisher=[[Zap2it]] |accessdate=April 27, 2009 |date=April 20, 2009 |archiveurl=https://web.archive.org/web/20090423045808/http://www.zap2it.com/tv/ratings/zap-tv-ratings-041909,0,5300310.story |archivedate=April 23, 2009 |deadurl=yes |df=mdy }}</ref> The character Brian was awarded the 2009 Stoner of the Year award by the magazine ''[[High Times]]'' due to this episode, marking the first time an animated character received the honor.<ref>{{cite web|url=http://hightimes.com/entertainment/ht_admin/6089 |title=The 2009 HIGH TIMES Stony Awards |date=December 31, 2009 |accessdate=January 2, 2010 |first1=Steven |last1=Hager |first2=Natasha |last2=Lewin |work=[[High Times]] |archiveurl=https://web.archive.org/web/20100107123519/http://hightimes.com/entertainment/ht_admin/6089 |archivedate=January 7, 2010 |deadurl=yes |df=mdy }}</ref><eod>