The duck and condom

Two ducks go on their honeymoon and stay in a hotel. As they are about to make love, the male duck says, ''Oh, we haven't got any condoms. I'll ring down to room service.'' He calls and asks for some condoms.

The woman says, ''OK sir, would you like to put them on your bill?''

''No,'' he says, ''I'll suffocate!''