A phrase invented by someone in the 21st century. It doesn't really have a meaning and is usually simply tossed into a conversation to make it more interesting. It often just confuses people and should probably not be used too often. Common uses for it are as a greeting, reply, icebreaker, end to an awkward silence or maybe even an exclamation.
Example 1:
Steve: When are we going shopping tomorrow?
Ryan: I don't know.
Tabitha: Can we go after 2 pm?
Zoe: No because I have a dentist appointment at 2.
Robert: Maybe we should do this another day.
Zach: Yullah Mahullah.
Ryan: Whaaaat?

Example 2:
Annie: Hey Brian!
Brian: Yullah Mahullah.

Example 3:
Sarah: How are you?
Todd: Yullah Mahullah

Example: 4
Andy: Do you want to die?
Bob: Yullah Mahullah.

Example 5:
Mandy: Let's all revolt against the government! They treat us like dirt! Who's with me?!?
Neal: ...
Patrick: ...
Nina: ...
Larry: ...Yullah Mahullah...

Example 6:
Jim: *shoots Ben in the foot*
Ben: YULLAH MAHULLAH!!!!!!

Example 7:
Richard: Yullah Mahullah.
Stacy: Really? Maybe we should go have some coffee tomorrow and talk a bit more about this!
by RainbowPuddleWOW September 20, 2010
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