Sexual Neiked feat. Dyo Download 'Sexual' on iTunes
McFly have organised a Twitter competition for Comic Relief.
For the highest bidder the band will follow the winner on Twitter for 90 days, retweet one of their tweets and send out a tweet including their Twitter @username.
Tom Fletcher wrote: 'Do you want US to follow YOU on twitter?
'Plus you'll be doing something amazing for charity!'
The eBay auction is currently at £353 and can be watched here