combodumb
When someone thinks the combos on a restaurant menu come as just a chips and drink for $5 and doesn't realise it means you can add chips and drink to your schnitzel roll order for just $5
Person 1: "What are you ordering?"
Person 2: "I'll just get the $5 combo"
Person 1: "What roll are you having with it?"
Person 2: "I'm not having a roll, just the chips and drink combo"
Person 1: "You can't do that, you're combodumb"