In drama, if a script is competently wrought one may trust that the maxim of Chekhov’s rifle will be observed. Just so in porn, where the rule is similar: if a girl with no panties on is licking a lollipop, you may reliably expect to see that lollipop going all up in her business real soon now:

naked girl licking a lollipop

From ALS-Scans. See also: a bunch of ALS Scan pictures on Tumblr.