'Big Brother' housemates mocked Sophie and Kris' nocturnal activities last night.

After Iranian housemate Siavash's claims he could hear "moaning" under the sheets from the couple on Wednesday (17.06.09) night, he and Charlie took it upon themselves to embarrass them at bedtime.

The housemates all had an early night, taking to their beds just after midnight this morning (19.06.09), but as soon as resident hunk Kris, 24, cuddled up to 30GG glamour model Sophie in bed, jokers Charlie and Siavash started making rude noises of their own.

Charlie was first, whispering to the house: "Stop touching my d**k, for f**k's sake."

Siavash then took it upon himself to reply: "Right, I'm definitely going to *** on your face now."

Neither Kris nor Sophie responded, but soon after stopped cuddling and slept without facing each other the rest of the night.

Yesterday (18.06.09) Siavash confronted Sophie, 20, about her night time activities with Kris, saying he definitely "saw something" happen under the covers between them the previous night.

Sophie - who officially changed her name to Dogface for the show - said "Oh no!" and became embarrassed but denied anything had gone on between them.