(define me
(lambda (code food tea)
(cond
((or (null? food) (null? tea)) code))
(else
(cons "public class Foo { // sigh..."
(me code (cdr food) (cdr tea))))))
(define contact-me
(lambda (you)
(cond
((not (human? you)) "no thank you")
(else
(string-append (string #\m #\e #\@) "rrc.io")))))