Universal greeting

Eh, close-enough

The universal greeting in the Generation 1 universe, introduced in The Transformers: The Movie, is commonly transliterated as baa weep graa naa weep ninny bawn.

It is used as a means to express good will toward alien beings when a language barrier is present. However, it does not always work that way. The Alligatorcons on Quintessa reacted violently to the greeting, chanting it as they attacked Hot Rod and Kup. However, the Junkions on the Planet of Junk took it rather well and threw a party.

(Note: In the Japanese version, the Universal Greeting is pronounced "Berwip crawna-wi pinibon".)

Universal Greeting Dance

In Robots in Disguise continuity, there also exists a universal greeting dance, used to convince even the most implacable enemies of one's sincerity.

From Teletraan I: The Transformers Wiki, a Wikia wiki.