Juice the lime to yield 1/2 tablespoon (about the juice of 1 lime) and set aside.
Add the mayonnaise, sour cream, dry ranch seasoning, sliced green onions, lime juice, minced garlic, salt, pepper, and chipotle peppers in adobo to a blender or food processor.
Blend until completely smooth and well combined, scraping down the sides as needed.
Taste and adjust seasoning: add more salt, pepper, lime juice, or additional chipotle peppers for more heat.
Serve immediately or chill briefly before serving.