Sliming

from The Collaborative International Dictionary of English v.0.48

Slime \Slime\ (sl[imac]m), v. t. [imp. & p. p. {Slimed}
   (sl[imac]md); p. pr. & vb. n. {Sliming}.]
   To smear with slime. --Tennyson.
   [1913 Webster] slime mold