The act of farting on a Woman's breasts. Similar to a "motorboat" but with with added power and control. This act can be performed in a variety of settings but is best while both parties are crouched in a bathtub and wearing Captain's hats.
This act is usually followed by shame and uncomfortable eye contact. Jetboating is not recommended before family functions or important job interviews.
"Hey Zeke, I could really go for a Jetboat right about now"
"Oh yeah? I'll start the bath if you want to grab the Captain's hats"
"Wait! Tomorrow's Thanksgiving, maybe we shouldn't."
(verb) To take a slightly unattractive girl to a sleazy pizza place after drinking heavily, not order any pizza, but instead make out with the girl in the corner while shitty music plays and the counter-attendants look on unhappily. One who jumbo slices will not take the girl home after.
Mikey's hitting on every girl at the bar tonight. He must really be trying to jumbo slice!