Slang term for a woman's genitalia. To be more specific, her vagina/pussy. It could also be referring to Forest.
"She had a tight diagon alley."
"Her diagon alley was getting railed, so i plowed her knockturn ally."

by Farced DD February 26, 2009
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n. An orgasmic or euphoric state, often times during passionate sex. It is a direct reference to the magical locale featured in many of the books in the Harry Potter series.
- "I'M GONNA TAKE YOU TO DIAGON ALLEY, BABY!"

- "OH GOD! OH GOD! I'M IN DIAGON ALLEY, OH GOOOOD!"

- "Carolyn told me she wanted to visit Diagon Alley, so I tapped her back entrance with my wand. Giggity."
by acwing July 11, 2007
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Diagon Alley
n. An orgasmic or euphoric state, often times during passionate sex. It is a direct reference to the magical locale featured in many of the books in the Harry Potter series.

- "I'M GONNA TAKE YOU TO DIAGON ALLEY, BABY!"

- "OH GOD! OH GOD! I'M IN DIAGON ALLEY, OH GOOOOD!"

- "Carolyn told me she wanted to visit Diagon Alley, so I tapped her back entrance with my wand. Giggity."
Source: acwing, a series of tubes
by acwing August 4, 2007
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