Classic 70s 7-Layer Mexican Dip

sour cream

mayonnaise

( 10 ounce ) can refried beans

package taco seasoning

ripe avocados

Juice half a lime

kosher salt

freshly cracked black pepper , or to taste

finely shredded cheddar or Mexican blend cheese

medium tomato , cleaned, seeded and chopped

sliced black olives

large green onion , sliced