A child conceived through clandestine
means on the female's part. Said means usually consist of the female giving fellatio, pretending
to swallow, concealing
semen in the side
of her mouth
(as a chipmunk), and later transferring the semen from the mouth
to the vagina.
"... but Steve told me last year that they
to have kids! I bet that sneaky bitch
Jill made herself a chipmunk baby."