'Electrocuted' when what is meant is an electric shock (electrocuted means you DIED).
'off of' should be 'from' in most cases - "he moved off of the couch" - NO, he moved FROM the couch!
'I bought it from eBay' - no you didn't, you bought it from a SELLER ON eBay. Which reminds me:
brought and bought - "I BOUGHT the pinball machine and I BROUGHT it home"
'could care less' - OK, so you actually still do care a little bit then! Correct is "COULDN'T care less" meaning you absolutely don't care even a tiny bit - COULD NOT.