Lovebirds Avril Lavigne and Brody Jenner got matching tattoos this week to prove their everlasting love for one another.

The word the pair chose to have engraved into their flesh is the most romantic thing they could think of at that moment—F**K—which they had inked across their ribs.

Appearing very ragged the couple said they had “not slept for two days” as they staggered around Mark Mahoney’s Shamrock Social Club tattoo parlor in Hollywood.

A source told RadarOnline.com that Avril and Brody looked awful when they arrived at the shop. “They were laughing and said they had not slept in two days. They were completely, utterly out of it. Then nobody could believe it when they said they wanted the word F**K written on their ribs. Avril didn’t even care that the only person available to ink her in the shop was an apprentice. She just said, ‘I don’t care do it.’ Neither of them seemed to stop and think about what they were doing, it was just one big laugh.”

This is not the couple’s first matching tattoo. During a trip to Las Vegas in April they got matching lightning bolts. Avril had hers placed on a forearm while Brody had his put behind an ear.

We give the relationship six months, but those tats are forever. (RadarOnline)

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