Top definition
When somebody else jacks your or others hashtags to promote there twitter page or product
Example of Hashjacking:
Omg check out this cool thing or a tweet full of hashtags
#NYCMarathon
#PrimarySchoolMemories
#Secondaryschoolmemories
#IveAlwaysWantedTo
by zqtwho November 06, 2011
Get the mug
Get a hashjacking mug for your cat Vivek.