A large man having hard sex with a small woman is "pwogging."
It can also be used to describe the sound that a large amount of sperm launching from the penis quickly makes.
Hey Joe, did you know Mary got pwogged last night? FOR 13 HOURS????
guy:"oh yeah oh yeah oh yeah, OH YEAH HERE IT COOOOOOMES!!!!!"
girl:oh yeah, its all over my face! pwog in my mouth!"