When you have to recall, or explain something and don't rly remember it's name, or it's not on the top of your head , so you refer to it as a"thingy majigy".
Can you pass me the ummm...thingy majigy.

i lost my ummm... thingy majigy.
by Ugly Betty Gets Pretty May 6, 2017
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The super posh word of the man's "Penis". The long stick as you might say (or small stick). If you see a "thing" say "THINGY MAJIGY!".
by Jaden284 October 18, 2017
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