Noun - a formal request, often mailed,that is sent to friends/family to ask for their presence at a ceremony of matrimony. Distrubution of cheap wedding invitaions may result in Funeral Invitaions for the "licker" of the envelopes.
WARNING: May be fatal if a descent amount of money is spent to insure a good/non-toxic adhesive for the envelopes
Newman: Look! Today I got George's wedding invitation!
Krammer: Yeah, too bad Susan's dead because George wanted to save money.