To hide or smuggle items in ones anus
Goodman figured keistering the dildo would be just the trick to avoid detection by store security
av KC Is A Knob Gobbler 21 april 2009
1 more definition
To inject drugs up your or someone else's rectum. Also known as a booty bump. See crystal meth.
Adam came down with a nasty sore in his ass from keistering too much meth all weekend.
av sonomachris 18 september 2006