Really big ones

Boobs A Poppin

Ron Jeremy plays a con man advertising on TV a scam called Larry's Low-Down Condos. Contract calls for $500 a month for a condo, but he's had them all outfitted with hidden cameras and sound units to tape folks having sex which he will release on VHS without permission. His helper is played by Letha Weapons, who clearly has the biggest boobs on the video and Ron gets to hump her.