1 definition by pr0gramm
1) To extract the fun out of something, to render something boring and or painful, to ruin something
2) A keyword in the LISP programming language
2) A keyword in the LISP programming language
John: Let's play with the ball at the beach!
Mike: We can't, we have to study for the test tomorrow, and we have no hand-eye coordination, we're engeniering students remember?
John: You just defun my day. You defun everything.
Mike: We can't, we have to study for the test tomorrow, and we have no hand-eye coordination, we're engeniering students remember?
John: You just defun my day. You defun everything.
by pr0gramm December 28, 2013