Used to define a mechanical part or mechanism the the user does not know the actual word for.

Similar to thingamabob, doohickey or thing-a-ma-jig
Cohutt broke his doo-lolly and had to e-mail Dillon Precision to get a replacement
by Adam Neat (ANeat) May 19, 2007
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150 year old female butt acts like dumbass teenage ditsy bobble headed blonde bitch even though they are 125 years past to old to pull it off not that they ever could have in the first place and so very obvious it's embarassing
That dumbass is such a doo lolly.....stupid bitch
by Know master March 18, 2022
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