From Masq

+submit to <player>

Used for mortal/vampire interactions. If a mortal wishes to submit to a vampire for feeding without bothering staff for a timestop, the player may use this command. This will allow the vampire to feed for a limited period. Each feed will take 2 blood points, down to a minimum of 2 blood points.

Note: You cannot be drained and die using this command. If the vampire wishes to drain you dry, they must contact a judge.