Shred that lettuce.

Brown that beef in a pan with some oil.

Chop them tomatoes.

Finely crush the Doritos

Cut those scallions thinly.

Cut them tomatoes.

Combine the browned beef, scallions, cheese, and lettuce and then cool/chill.

Add the tomatoes, dressing, and crushed Doritos just before serving.

Have you and your colleagues shove it done your gullets.