beat with the ugly stick

/B IY1 T W IH0 DH AH0 G L IY0 S T IH0 K/
verb
  1. 1

    (slang, derogatory, idiomatic, in the past participle) Used to describe someone who is particularly ugly or unattractive.

  2. 2

    (slang, idiomatic, somewhat vulgar) To engage in penile copulation.