The idiom "a few sandwiches short of a picnic" is used to describe someone who is not very intelligent or who behaves in a strange way. It implies that the person is missing something important, just like a picnic would not be complete without sandwiches.
For example, if someone is talking nonsense or doing something that doesn't make sense, you could say "he's a few sandwiches short of a picnic". This means that the person is not thinking clearly or is not very smart.
This idiom is often used in a humorous way, but it can also be used to criticize someone who is not behaving in a rational or logical way. However, it's important to use this idiom with caution as it can be considered offensive or rude to some people.
• He's a few sandwiches short of a picnic, he always forgets everything.
• I'm sorry to say, but your argument is a few sandwiches short of a picnic, it's not convincing.
• It's clear that the CEO's plan is a few sandwiches short of a picnic, he doesn't understand the industry's current trends.
• Jim's ideas about business are a few sandwiches short of a picnic, he needs to be more realistic.
• The politician's latest proposal seems a few sandwiches short of a picnic, it's not well thought out.
• My sister can be a bit scatterbrained at times, but I wouldn't say she's a few sandwiches short of a picnic.