Top Definition
Most common among women in their late twenties to early fifties, Tisoms are a natural combination breast that merge grandma's warm, welcoming bosoms with the perky hot tits of a firm young woman.
Man, Sharon may be 32 but her tisoms are amazing: They simultaneously remind me of my girlfriend's perky young tits when we were 15 and my grandma's big old boobs: comforting, yet arousing.
by twothirds75 September 08, 2012

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