At least 3 sometimes 4/day. Most ever: 7 (in 24 hours). I thought my girlfriend was getting sick of it so I gave her a day off and she kinda got pissy, missed the cock I guess. Can't say I blame her.
Any more than 3 tho and I end up taking like 45 minutes+ to nut. I get sweaty and nasty and punish the puss more than it deserves.