The Collaborative International Dictionary
Shabbing
Shab \Shab\, v. t. [imp. & p. p. Shabbed; p. pr. & vb. n. Shabbing.] [See Scab, 3.] To play mean tricks; to act shabbily. [Obs. or Prov. Eng.]
Wiktionary
shabbing
vb. (present participle of shab English)