tickle someone's pickle

verb2

1. •
   (slang) To stimulate someone's penis sexually.

   • Cole slowly put his face into the man's clothes, his own sweat plastering his hair over his brow, a few pubic hairs brushing against his nose. "That's the way, fairy, tickle my pickle." — 1972
2. •
   (informal) To amuse or astonish someone.

   • Well, tickle my pickle and call me Uncle. — 1992