Everyone's favourite animated little terror, Stewie Griffin from Family Guy, will make a unique crossover appearance on Bones this spring.

In a Bones episode titled The Critic in the Cabernet, which will air May 6 on Global and May 7 on Fox, Stewie (the voice of Seth MacFarlane) will offer Booth (David Boreanaz) some advice. "Kill Lois," perhaps?

Brennan (Emily Deschanel) decides she wants to have a baby and surprises Booth with a request to father her child. Brennan's request brings to the surface all the unspoken feelings and unresolved issues between the two.

The stress of the situation, coupled with Booth's undiagnosed health issue, paves the way for a surprise visit from Stewie. The diabolical toddler assesses the situation and offers some advice in his unique style.

"The guy (Stewie) was good during the actual scenes, which is the important thing," Boreanaz said in a statement. "But between takes he literally vanished -- nowhere to be seen.

"I guess it's true that Brits and cartoons tend to be standoff-ish. Or maybe it was a method thing, I don't know."