LIKE TWO PEAS IN A POD is an American idiomatic expression describing two people who look alike, but are not related biologically. The green pea seeds in a pod look very much alike, appearing identical in color and size. From this vegetable comes the expression. This expression can describe other similarities, like having the same tastes in movies, music, food, similar personalities, opinions, likes and dislikes, etc. But, much of the point communicated by this expression is the likeness of the facial features, and perhaps the hair color.
Note: This expression can be used without the word "like" in front of it.
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Examples in casual speech
"Wow! The two girls are best friends, but they could be sisters! Everyone says they look so much alike and I agree! They're like two peas in a pod!"
"Those two men look like twins! They're like two peas in a pod, and not related at all!"
"Oh! You mean those boys aren't brothers? Now, there's two peas in a pod, for you!"
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