What does SIU mean?

suck it up

SIU

Other definitions of SIU:

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SIU:

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More slang terms:

FTBOMH

FTBOMH

From The Bottom Of My Heart

TTTH

TTTH

Talk To The Hand

Peg

Peg

A term for the sexual practice of a woman penetrating a man's anus with a strap-on dildo.