When your grandpa puts on your grandma's clothes and crossdresses.
What's up with Pop lately? He can't stop doing the tranny granny.
by meowlnir February 3, 2016
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A transvdite grandma.
Neil's grandma is a tranny granny
by Darryl February 5, 2003
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Lame driver who doesn't know how to shift -- i.e. only drives an automatic transmission.
An automatic! You're such a tranny granny.
by Shakespeare April 15, 2005
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It’s basically continuation of “ur mum gay”which is used by few cus they don’t know what it means
Carl:your mum gay

Garl:no you
Karl:your dad lesbian
Garl:your granny tranny
Karl:*kills himself*
by >Joshy< March 13, 2018
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Old Men(perferably over 50) engaged in sexual activity dressed up as Old Lady's
I was totally into that old lady till I found out she was a granny tranny
by Surg June 1, 2006
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A transmission with a low gear (granny gear), usually used on trucks and other towing vehicles, to make it easy to take off on a hill with a heavy load.
This truck has a granny tranny so it's easy to learn how to drive stick shift with it.
by Eaglescout1984 January 15, 2009
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