The joke is that it is Sneed's Feed and Seed which rhymes but the sign says it was 'formerly Chuck's. Therefore, it is funny because if the store used to be Chuck's then it must have been called Chuck's Feeduck and Seeduck in order to maintain the rhyme scheme, but hilariously Feeduck and Seeduck arent actual words in the English language which is funny. Wow the Simpsons is such a great show how did the writers get away with this one
Sonic's Hi Speed Shoes are Soap Shoes. They first appeared in Sonic Adventure 2. The reason of their inclusion was to advertise the Soap brand at the time. And because of the grinding mechanic. Sonic wears them. They later appeared in Sonic Forces, as an unlockable item for the Avatar.