Last modified on 19 June 2013, at 21:57
From a supposed resemblance of the penis to a lizard.
drain the lizard (third-person singular simple present drains the lizard, present participle draining the lizard, simple past and past participle drained the lizard)
- (vulgar, of a male) To urinate.
- Be right back. Gotta go drain the lizard.