The Irish actor, who once famously smooched with the ME AGAINST THE MUSIC singer, sent Britney a top bearing the slogan, "I slept with Colin Farrell and all I got was this lousy t-shirt".
Colin also mailed her a bumper sticker reading, "Honk if you've slept with Colin Farrell".
The gifts are in response to Britney denying she's enjoyed a raunchy encounter with the handsome star earlier this year (03).
A pal of Colin's says, "He thought it would be a great gag to send her the gifts. I think she thought Colin was being a gentleman and had sent her some perfume.
"She got quite a shock when she opened his package. She didn't see the funny side and screamed at him on the phone. He was laughing so much she hung up - they haven't spoken since."09/11/2003 14:02