The phrase "the old one two" is often associated with boxing, where it refers to a simple combination of jabs. However, there are many synonyms that can be used to describe this technique, including the one-two, the one-two punch, the jab-cross, the left-right combination, the lead-cross combo, the double punch, and the two-hit combo. Each of these terms refers to a technique where the lead hand jabs quickly and is immediately followed by a cross with the rear hand. Regardless of the name used, this technique is effective for setting up more complex combinations and wearing down your opponent.