There is one scene of the aliens looking at a bikini-babe in a magazine. Nothing graphic.

There are two or three instances of off-screen but very audible "sexual activity".

In one scene the aliens strip down to adult diapers.

In one scene a giant pulls off the head of a victim and eats it. There is zero gore, zero blood, and no details are shown. While the headless body is shown falling to the ground, the action is more implied than visible.

In one scene a person's face is severely and visibly burned on a grill. In the following scenes there is no sign of injury.

If one considers "By the rancid butt flaps of Rabirr" to be profanity...

The term pu**y is used several times as an insult to prowess.

Drinking is a major comedic theme of the movie.