I'd have used
'practice defecation' which scans fine
(
boris the spider,
Tue 8 Apr 2008, 12:08,
archived)
in that case
bally good show.
I'd have used some variant of "penetration"
(
Mockingbird Practitioner of SCIENCE,
Tue 8 Apr 2008, 12:13,
archived)
oh
'and attempt ape-on-ape penetration'
(
pikey,
Tue 8 Apr 2008, 12:18,
archived)