Top Definition
When a younger person sexually identifies as an old person (e.g. grandparent)
Why does Suzy insist on using her handmade doilies as condoms and making her cats watch us fuck? She must be a gransexual!
by Justforkix April 12, 2016

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An elderly person who is attractive.
Stephen Gunderson is a gransexual
by pudge258 May 07, 2010

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A transexual grandparent.
Hate to break it to you, but your ambiguous grandmother is a total gransexual.
by harlan50 February 29, 2012

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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