(nautical) Any vessel driven by an engine (either inboard or outboard), but especially a small one.

To ride in a motorboat.

(slang, intransitive, transitive) To press one's face between (another person's breasts); to press one's face between the breasts of (another person).

(slang, transitive) To press one's face into or between (something else).

(slang, transitive) To press (someone's face) into or between (breasts or, by extension, something else); to press one's breasts around (someone's face or head).