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noun. The simultaneous co-occurrence of a sneeze, queef, fart, and burp. An admittedly rare event, but a theoretical possibility.

verb. To sneeze, queef, fart, and burp simultaneously.

Etymology: S(neeze) + QU(eef) + (f)AR(t) + (bur)P.
Ramona squarped so violently that I thought she would explode.
by fauxbourdon December 03, 2005