Bill has a wry sense of humour that does not appeal to everyone.
Advanced English Dictionary
+adjective[usually before noun] (written) 1 showing that you are both amused and disappointed or annoyed: 'At least we got one vote,' she said with a wry smile. + He pulled a wry face when I asked him how it had gone. 2 amusing in an IRONIC way: a wry comedy about family life + a wry comment + wry humour wryly adverb: to grin / smile wryly wryness noun [U]
Random quote: Your vision will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.: Carl Jung