Ron's—or rather, Crabbe's—face was contorted with fury. "What's up with you, Crabbe?" snapped Malfoy.
"Stomach ache," Ron grunted.
"Well, go up to the hospital wing and give all those Mudbloods a kick from me," said Malfoy, snickering.
"You know, I'm surprised the Daily Prophet hasn't reported all these attacks yet," ... ...
According to Collins dictionary:
If something gives you a kick, it makes you feel very excited or very happy for a short period of time.
But it doesn't look fit for this context. Maybe the phrase just takes its literal meaning here. Does the phrase have a special meaning? What does it truly mean?
-- From Harry Potter.