jeffa simply stands for Jeff Anderson. However, some time ago someone asked me if it was Mexican - 'hehfey' - i guess that's what i get for associating myself with eduardo, who is of Spaniard descent. (and speaks better English than i do!)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
F--F--F--F--F--F--F--F--
(the triplet paradiddle)