The belly dancer was eliminated from Channel 5's inaugural series of the reality show after picking up fewer viewer votes to save than Aaron Allard-Morgan and Harry Blake.
The 21-year-old immediately asked if the result was a joke and admitted to being "in total shock", at which point her stunned housemates told her not to cry.
While waiting for host Brian Dowling to reveal all, Tashie gasped at the "harsh" booing and chants for her to be evicted that came from the gathered crowd.
On her way out, the Harry Potter extra called out to the group: "Best of luck to everyone, you're all amazing people. You deserve it, you truly deserve it."
As she waited for the front doors to open, Tashie told her former housemates: "Thank you for everything. Thank you for this incredible opportunity."
Tashie, who was the bookies' favourite for eviction, left the house rubbing her eyes with a tissue and refused to move from the turntable as the audience continued to boo.
The sullen-faced evictee was eventually collected by Dowling and brought down to pose for photographers.
> Read Digital Spy's full Big Brother coverage
Watch Tashie Jackson's Big Brother eviction below: