Although not a feature in all games, some games in the series have sexual puns in the title. A list of all games can be found below with the puns ones highlighted with a (P).
Original series
Ratchet & Clank
Going Commando (P)
Up Your Arsenal (P)
Ratchet: Deadlocked
Future saga
Tools of Destruction (P)
Quest for Booty (P)
A Crack in Time (P)
Into the Nexus (P)
Reimagining
Ratchet & Clank
Spin-offs
Size Matters (P)
Secret Agent Clank
All 4 One
Full Frontal Assault (P)
Mobile
Going Mobile
Before the Nexus
Collections
Ratchet & Clank Collection