Normally referred to a very pleasurable sexual act performed by women on men. It involves the male sticking his throbbing red head between a womans cleavage.
1) Wow Claire has really big boobs i would love to shove my todger between those lush tits and tit-wank until i shoot my warm jizz in her face and on her boobs while she screams for more.
2) Tom was giving it to Sally in the garden and Sally responded by giving Tom a lovely tit-wank, the pervert next door name John was caught masturbationg over the lovely deranged couple.
3) My boyfriend pleaded me to tit-wank him so i grappled his cock and thrusted it between my juicy melons, he cummed and i lapped it up of my round tits.