In a Lost Galaxy episode, Leo tried to score a date with a girl but had to deal with her motorcycle-riding brother. At one point, the brother offers "Want to take her for a test drive?" The question hangs in the air for a bit before he clarifies "The bike!"
Not to mention that the last episodes feature the villain ordering suicide bombings.
An early episode has Red Ranger Jack approached by an attractive young recruit, asking him to show her "some close-quarter defensive maneuvers."
Z to Bridge: "How do you trick out your bed?"
In Turbo, they managed to get the villain being a terrorist bomber past the radar by referring to the bombs as "detonators" as she tried to bomb fire trucks, bridges, parks, skyscrapers...
Don't forget the infamous episode of Turbo in which the Rangers are baked into a giant pizza. TJ confronts the monster with the wonderful quote: "We're here to toss your salad!"
Wild Force had main character Cole's parents murdered by the Big Bad prior to the first episode. Fox Kid's censors would only let Cole's parents be murdered because the producers lied that the show would later reveal that Cole's parents were alive and were merely a brainwashed Jindrax and Toxica knowing full well that the show was moving to ABC Family in the second half and Disney didn't watch the first half and wouldnt know about that scene. ** And the way they died is definitely a Family-Unfriendly Death.
While fighting a Vacuum Cleaner monster, Scott is able to get away with the pun: "Suck on this!"
Ninja Storm had an episode open with Shane and Dustin ogling a computer with lines like "what a babe" and "check out the lines on her". Cam catches them and remarks "I hope you guys aren't doing anything illegal". Embarrassed, the two try to hide the computer, only for Cam to grab it and find they were looking at... readouts of the new motorcycles they received last episode.
In Ninja Storm episode "Nowhere to Grow," the plant monster moans in a seductive voice, and in the voice tells her little plants to "Grow baby grow," among other seductive one-liners. If listening, without watching, you'd think you were watching a cheesy porn.
The most recent one is from the Megaforce episode "Man and Machine". You see, the Monster of the Week likes to go out in sunny weather because that's when he can steal and eat the shadows of people, freezing them in place. So when the new Megazord is formed to bring down the monster, Troy manages to get away with this line: