yes they can(if they are dead!)
"A secular or humanist funeral is a positive, dignified, non-religious celebration of the life of a loved-one. Recognising that all life ends, we accept that there is no evidence of a life after death, so we concentrate on the life that has been, taking comfort in the fact that the deceased will live on in our memories. So we celebrate the achievements of the deceased and the influence had on those that they have come in contact with and the world around them."